NCERT CLASS 11 | TOPIC : STRUCTURAL ORGANIZATION IN ANIMALS | ARQB | NEET BIOLOGY ONLINE TEST

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NCERT CLASS 11 | TOPIC : STRUCTURAL ORGANIZATION IN ANIMALS | ARQB | NEET BIOLOGY ONLINE TEST

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It contains 34 important questions. Choose the most correct answer. Then check your answer. Try again if there are errors. Regards : www.onlinetest.kalvisolai.com

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1 ➤ 95. Assertion: Ciliated epithelium mainly present in the inner surface of hollow organs like bronchioles and fallopian tube. Reason: Cilia are microvilli.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

2 ➤ 96. Assertion: Muscle fibres are said to be contractile in nature. Reason: Cells of muscle tissues can shorten forcefully and again return to the relaxed state.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

3 ➤ 97. Assertion: Gap junctions facilitate the cells to communicate with each other. Reason: Gap junction connects the cytoplasm of adjoining cells .

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

4 ➤ 98. Assertion: Smooth muscle fibres appear to be striated. Reason: This is due to regular alternate arrangement of thick and thin filaments in Skeletal muscle fibres.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

5 ➤ 99. Assertion: Non-striated muscles are said to be voluntary in nature. Reason: Non-striated muscles can be moved according to will.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

6 ➤ 100. Assertion: Intercalated discs are important regions of cardiac muscle cells. Reason: Intercalated discs function as communication junction for muscle contraction waves.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

7 ➤ 101. Assertion: Neurons are said to possess the property of excitability. Reason: Neurons can get excited by a given stimulus.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

8 ➤ 102. Assertion: Extracellular materials help in separation of cells. Reason: Cell junctions are formed by extra cellular materials.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

9 ➤ 103. Assertion: Epithelial tissues protect the under lying and over lying tissues. Reason: Materials are exchanged at the surfaces across the epithelial tissues.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

10 ➤ 104. Assertion: The cells of columnar epithelium in absorptive surfaces often bears microvilli on their free ends. Reason: Microvilli on their free ends.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

11 ➤ 105. Assertion: Ciliated epithelium helps in the movement of particles. Reason: Cilia helps in the movement.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

12 ➤ 106. Assertion: Extracellular materials are important for cells. Reason: Intercellular materials surround the cells and bind them together.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

13 ➤ 107. Assertion: Urinary bladder can considerably expand to accommodate urine. Reason: It is lined by stretchable transitional epithelium.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

14 ➤ 108. Assertion: Head of cockroach shows great mobility in all direction Reason: Cockroach possess flexible neck

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

15 ➤ 109. Assertion: Cockroach is uricotelic Reason: Fat bodies, nephrocyte and urecose glands help in excretion in cockroach

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

16 ➤ 110. Assertion: Cockroach possesses mosaic vision. Reason: Eye of cockroach contains several ommatidia.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

17 ➤ 111. Assertion: Development in P. americana is paurometabolous type. Reason: Development in cockroach occurs through nymphal stage.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

18 ➤ 112. Assertion: Sperm glue together and form spermatophores in vas deferens in cockroach. Reason: Sperm stores in vas deferens in cockroach

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

19 ➤ 113. Assertion: Cockroach is pest. Reason: Cockroach destroys food and contaminates it with their excreta.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

20 ➤ 114. Assertion: Cockroach is monoecious. Reason: Male and female sex organ is present in single organism.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

21 ➤ 115. Assertion: Earthworm possess moist body surface Reason: Earthworm respire through body surface

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

22 ➤ 116. Assertion: Earthworm known as friend of farmers Reason: They make soil porous which helps in respiration and penetration of the developing plant roots.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

23 ➤ 117. Assertion: Development of earthworm is direct type. Reason: There is no larva stage in development.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

24 ➤ 118. Assertion: Cockroaches are harmful to humans. Reason: They are vector of several diseases.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

25 ➤ 119. Assertion: If head of cockroach is cut off, it will still live for as long as one week. Reason: Head contain a bit of a nervous system.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

26 ➤ 120. Assertion: Frogs shows hibernation and aestivation Reason: This protect frog from extreme heat and cold respectively.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

27 ➤ 121. Assertion: Frogs are said to be cold blooded. Reason: Their body temperature varies with the temperature of environment.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

28 ➤ 122. Assertion: Frog shows sexual dimorphism Reason: Male frog can be distinguished from female by presence of vocal sacs

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

29 ➤ 123. Assertion: Frog maintain ecological balance Reason: Frog serves as important link in flood web and food chain in the ecosystem.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

30 ➤ 124. Assertion: Frogs are beneficial to humans Reason: Frogs eat insect and protect our crops

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

31 ➤ 125. Assertion: Cardiac muscle cell contract as a unit Reason: Communication junction (intercalated disc) present between the adjacent cells.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

32 ➤ 126. Assertion: Blood is connective tissue Reason: In blood, cells use to secrete fibres of structural proteins called collagen or elastin.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

33 ➤ 127. Assertion: Cells of Adipose tissue are specialised to store carbohydrates Reason: Excess of fat which is not used immediately converted in carbohydrates and is stored in this tissue.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

34 ➤ 128. Assertion: Tendons are used to attach bone to bone Reason: Ligaments are used to attach muscle to bone. previous year questions

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

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