Question

The growth of tendrils in pea plants is due to

• A. Effect of light
• B. Effect of gravity
• C. Rapid cell divisions in tendrillar cells that are away from the support
• D. Rapid cell divisions

Answer 1

The correct option is C

Rapid cell divisions in tendrillar cells that are away from the support

The correct option is C.

The explanation for the correct answer:

1. Tendrils are thin thread-like growths present on the stems and leaves of plants.
2. It provides support, a specific direction for plant growth, and helps keep the plant erect.
3. As tendrils require a supportive medium to grow, whenever tendrils come in contact with a surface it grows slowly.
4. The opposite side of the tendril surface that is away from the support surface tends to grow fast.

The explanation for the incorrect answer:

Option A:

1. The effect of light on a plant's growth is known as phototropism.
2. It is observed in plants and can respond by growing towards or away from the light source.

Option B:

1. Gravity is a crucial environmental factor that impacts root growth.
2. This phenomenon is referred to as gravitropism.

Option D:

1. The apical meristems of the plant contain rapidly dividing cells.
2. They are present in both root and shot tips and are capable of giving rise to the primary plant body.

Final answer: The growth of tendrils in pea plants is due to rapid cell divisions in tendrillar cells that are away from the support.