Question

Observe the below diagram. Identify the option suggesting the correct functions of A,B and C.

• A. A- Helps in attachment to the substratum, B- Stalk for supporting the body of brown algae, C- Leaf-like Photosynthetic organ for producing food
• B. A- Stalk for supporting the body of brown algae, B- Leaf-like Photosynthetic organ for producing food, C- Helps in attachment to the substratum
• C. A- Leaf-like Photosynthetic organ for producing food, B- Stalk for supporting the body of brown algae, C- The holdfast helps in attachment to the substratum
• D. A- Leaf-like Photosynthetic organ for producing food, B- Helps in attachment to the substratum, C- Stalk for supporting the body of brown algae

Answer 1

Answer: (C)

The given diagram is of Laminaria which is a brown alga.
A- The frond is a leaf-like organ which is photosynthetic in nature. It also contains air cavities for exchange of gases. B- The stipe is a stalk which supports the frond. C- The holdfast at the base helps in attachment of the algal body to a substratum.