Question

17. Leaf like photosynthetic organ in brown algae is

hold fast
fronds
rhizoids
​

Answer 1

Answer

Fronds

Explanation:

The leaf-like structure is referred to as a blade (when it is single and not divided), a frond (when divided), or a lamina (when flattened). The air bladders in the thallus are called pneumatocysts. They increase algal buoyancy.

Answer 2

Answer:

Leaf like photosynthetic organ in brown algae is called fronds.

Explanation:

• Brown algae belong to the class Phaeophyceae.
• The color of brown algae differs from olive green to brown.
• Brown algae grow mainly in the marine environment.
• The root-like structure which is responsible for anchoring the brown algae to their substrate is called a holdfast.
• The small stalk present on brown algae is known as a stipe which is known as its stem.
• The flattened structure in brown algae, which may be smooth or wrinkled and resembles leaves, is known as fronds.
• Fronds of brown algae are also known as lamina or blade.
• The fronds are covered with slime sometimes to prevent epiphytes.