Question

Which of the following characteristics is responsible for resistance to jassids?

• A. Morphological characteristics
• B. Biochemical characteristics
• C. Physiological characteristics
• D. None of the above

Answer 1

The correct option is A

Morphological characteristics

The correct option is A

Explanation of the correct option:

1. Cotton is a cash crop, which possesses hair-like compositions on its leaves, which offer protection from pests.
2. A kind of leafhopper, also known as cotton jassids is Amrasca biguttula.
3. Jassids are the common pests in Southern Asia, it not only affects cotton, and also influence sunflower and okra.
4. Infection of jassids on cotton makes the leaves turn brown and yellowish, and start curling, which eventually falls.
5. The hair on the leaves of cotton is the morphological structure, which helps the plant prevent jassids from infecting.

Explanation of the incorrect option:

Option B:

1. The biochemical characteristics include growth at different pH values, temperatures, atmospheric conditions, etc. of a plant.
2. The biochemical characteristics of plants are not responsible for resistance to jassids.

Option C:

1. Physiological characteristics of plants involve the physiology or functioning of plants.
2. Physiology is the scientific study of mechanisms and functions within a living system.
3. The physiological characteristics of a plant are respiration and photosynthesis, assimilation, uptake, and transport, of minerals and nitrogen, and water transport and uptake.
4. The physiological characteristics of plants are not accountable for resistance to jassids.

Final answer: Morphological characteristics are responsible for resistance to jassids.