Home
Class 12
BIOLOGY
A: Chitinous exoskeleton is a characteri...

A: Chitinous exoskeleton is a characteristic feature of arthropods.
R: It allows diffusion of water vapour from atmosphere to the body.
If both assertion & reason are true and the reason is the correct explanation of the assertion, then mark (1).
If both assertion & Reason are true but the reason is not the correct explanation of the assertion, them mark (2).
If assertion is true statement but reason is false, them mark (3).
If both assertion and reason are false statements, them mark (4).

A

If both assertion & reason are true and the reason is the correct explanation of the assertion, then mark (1).

B

If both assertion & Reason are true but the reason is not the correct explanation of the assertion, them mark (2).

C

If assertion is true statement but reason is false, them mark (3).

D

If both assertion and reason are false statements, them mark (4).

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze the assertion and the reason provided: ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that "Chitinous exoskeleton is a characteristic feature of arthropods." - This is true. Arthropods, which include insects, arachnids, and crustaceans, have a chitinous exoskeleton that provides protection and structural support. 2. **Understanding the Reason**: - The reason states that "It allows diffusion of water vapor from atmosphere to the body." - This is false. The chitinous exoskeleton is a hard and impermeable structure that does not allow for the diffusion of water vapor or gases. Instead, it serves primarily as a protective barrier. 3. **Evaluating the Relationship**: - The assertion is true, but the reason is false. The reason does not correctly explain the assertion because the chitinous exoskeleton does not facilitate the diffusion of water vapor. 4. **Conclusion**: - Since the assertion is true and the reason is false, we conclude that the correct answer is (3): "Assertion is true statement but reason is false." ### Final Answer: (3) Assertion is true statement but reason is false. ---
To solve the question, we need to analyze the assertion and the reason provided: ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that "Chitinous exoskeleton is a characteristic feature of arthropods." - This is true. Arthropods, which include insects, arachnids, and crustaceans, have a chitinous exoskeleton that provides protection and structural support. ...
Promotional Banner

Topper's Solved these Questions

  • ANIMAL KINGDOM (GENERAL ACCOUNTS & NON-CHORDATES)

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section-C)|69 Videos

  • ANIMAL KINGDOM (CHORDATES)

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section-D)|10 Videos

  • BIODIVERSITY AND CONSERVATION

    AAKASH INSTITUTE ENGLISH|Exercise SECTION - D (Assertion-Reason Type Questions)|10 Videos

Similar Questions

Explore conceptually related problems

Assertion: Cheese is one of the oldest food items in which microbes are used. Reason: Different varieties of cheese are known by their charateristic texture, flavour and taste, the specificity coming from the microbes were used. 1)If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1) 2) If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2). 3) If Assertion is true statement but Reaosn is false, then mark (3). 4) If both Assertion and Reason are false statements, then mark (4).

A : Baculovirus are species specific. R : It is very common in root ecosystem and effective against several plant pathogens. 1)If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1) 2) If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2). 3) If Assertion is true statement but Reason is false, then mark (3). 4) If both Assertion and Reason are false statements, then mark (4).

A : Developments is the emergence of a multicellular organism from a single group of cells R : Development involves growth differentiation and morphogenesis. (a) If both Assertion & Reason are true and the reason is the correct explanation of the assertion then mark a (b) If both Assertion & Reason are true but the reason is not the correct explanation of the assertion then mark b (c) If Assertion is true statement but Reason is false then mark c (d) If both Assertion and Reason are false statement then mark d

A : The most immediate effect of FSH is the maturation of existing late primary or secondary follicle . R : A rising level of FSH causes the developing egg within the follicle to complete the first meiotic division to form a secondary oocyte. . (a) If both Assertion & Reason are true and the reason is the correct explanation of the assertion then mark a (b) If both Assertion & Reason are true but the reason is not the correct explanation of the assertion then mark b (c) If Assertion is true statement but Reason is false then mark c (d) If both Assertion and Reason are false statement then mark d

A : Secondary mycelium of Agaricus is binucleated. R : Secondary mycelium is formed by somatogamy of primary mycelium. (a) If both assertion & reason are true and the reason is the correct explanation of the assertion (b) If both assertion & reason are true but the reason is not the correct explanation of the assertion (c) If assertion is true statement but reason is false (d) If both assertion and reason are false statements

A : Lichens do not grow in polluted area having SO_(2) . R : Lichens secrete carbonic acid and oxalic acid on barren rocks. (a) If both assertion & reason are true and the reason is the correct explanation of the assertion (b) If both assertion & reason are true but the reason is not the correct explanation of the assertion (c) If assertion is true statement but reason is false (d) If both assertion and reason are false statements

A : Most birds posses only the left ovary and left oviduct for conveying the ovum released from the ovary R : The avian ovary does not form a corpus luteum from the ruptured ovarian follicle which undergoes rapid shrinkage. (a) If both Assertion & Reason are true and the reason is the correct explanation of the assertion then mark a (b) If both Assertion & Reason are true but the reason is not the correct explanation of the assertion then mark b (c) If Assertion is true statement but Reason is false then mark c (d) If both Assertion and Reason are false statement then mark d

Assertion: The heart of cockroach is neurogenic. Reason: The heartbeat rate in cockroach is 49 per minute. (a) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion. (b) If both Assertion and Reason are true, but the Reason is not the correct explanation of the Assertion. (c) If Assertion is true, but Reason is false. (d) If both Assertion and Reason are false.

Assertion : Lycaenops is a mammals - like reptile. Reason : Mammal - like reptiles originated in the Permian period. (a) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion. (b) If both Assertion and Reason are true ,but the Reason is not the correct explanation of the Assertion. (c) If Assertion is true, but Reason is false (d) If both Assertion and Reason are false.

Assertion: In earthworm, development larval stage is not found. Reason: Because in development larval stage is not found. (a) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion. (b) If both Assertion and Reason are true, but the Reason is not the correct explanation of the Assertion. (c) If Assertion is true, but Reason is false. (d) If both Assertion and Reason are false.