Phaeophyceae

Q.

Cell elongation in the internodal regions of green plants occurs due to

1. Indole acetic acid

2. Gibberellins

3. Cytokinins

4. Ethylene

Q. The stored food material of Laminaria is

1. floridean starch
2. glycogen
3. laminarin
4. both b and c

Q.

In Phaeophyceae, the plant body is usually attached to the substratum by (1)_______, and has a stalk, termed the (2)_______ and a leaf like photosynthetic organ called the (3)_______.

1. 1 - Stipe, 2 - Frond, 3 - Holdfast

2. 1 - Stipe, 2 - Holdfast, 3 - Frond

3. 1 - Holdfast, 2 - Stipe, 3 - Frond

4. 1 - Frond, 2 - Stipe, 3 - Holdfast

Q. deuteromycetes are known as imperfect fungi cuz they lack sexual reproductive cycle. but even in basidiomycetes sexual organs are absent. then why basidiomycetes r not known as imperfect??

Q. Give any two difference between homothallism and heterothallism.

Q. Match the algae to their characteristic pigment.

1. Phycoerythrin
2. Fucoxanthin
3. Chlorophyll b

Q.

what is meant by dioecious?