CTET Paper II (Upper Primary: Class 6-8)

Reproduction - Modes in Plants and Animals Puberty Human Reproductive System question bank (Mathematics & Science)

Practice 36 free CTET Paper II (Upper Primary: Class 6-8) Mathematics & Science - Reproduction - Modes in Plants and Animals Puberty Human Reproductive System questions with answers and step-by-step solutions.

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Q1.

While teaching reproduction in plants, a teacher demonstrates artificial vegetative propagation through grafting on a potted rose plant. A student asks why the stock and scion must be tied tightly with their cambium layers touching. How should the teacher respond?

Topic: Reproduction - Modes in Plants and Animals Puberty Human Reproductive System | Source: AI Generated (CTET Paper II (Upper Primary: Class 6-8))

(A)

To prevent air from entering the roots.

(B)

To ensure vascular continuity so that water and minerals can flow from the stock to the scion, and food from the scion to the stock.

(C)

So that the flower color changes instantly.

(D)

To increase the weight of the pot.

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Q2.

A teacher initiates a classroom debate on 'Asexual versus Sexual Reproduction in Plants: Evolutionary Advantages and Disadvantages.' Which student argument correctly applies genetic principles?

Topic: Reproduction - Modes in Plants and Animals Puberty Human Reproductive System | Source: AI Generated (CTET Paper II (Upper Primary: Class 6-8))

(A)

Asexual reproduction creates high genetic diversity, allowing species to adapt quickly to environmental changes.

(B)

Sexual reproduction produces clones that are identical to the parent plant under all conditions.

(C)

Sexual reproduction introduces genetic recombination and variation through meiosis and fertilization, enhancing evolutionary adaptability, whereas asexual reproduction maintains stable traits in stable environments.

(D)

Asexual reproduction requires two parents and involves gamete fusion.

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