Biology 9 Chapter 5

Biology 9 Chapter 5 - Test 2

1. Sargassum and seapalm are examples of thallophytes.

a) True
b) False

2. Green algae are considered to be ancestors of plants because both the groups contain same photosynthetic pigments and same reserve food material.

a) False
b) True

3. Contractile vacuoles in chlamydomonas, are starch storing bodies.

a) False
b) True

4. Spirogyra is a filamentous green alga found in oceans and seas.

a) True
b) False

5. Filaments of spirogyra float on the surface of water due to accumulation of oxygen in mucilage.

a) True
b) False

6. Algin, carrageenan and agar are obtained from fresh water algae.

a) True
b) False

7. Red tide is caused by dinoflagellates toxins produced in warm waters.

a) False
b) True

8. There are approximately 23 million known species of algae which have been classified.

a) False
b) True

9. A thallus is a:
a) Stem part of plan
b) Plant body having root, stem and leaves.
c) Root part of plant.
d) Plant body not having root, stem and leaves.

10. Rhizopus is a:
a) Mutalistic fungus
b) saprophytic fungus
c) parasitic fungus
d) Green alga

11. Imperfect fungi reproduces:
a) By fragmentation
b) Sexually only
c) Both sexually & asexually
d) Asexually only

12. Hyphal cell wall contains:
a) Cutin
b) Chitin
c) Lipid
d) Cellulose

13. Function of rhizoidal hyphae is to:
a) Penetrate the substrate and absorb the digested food.
b) Help in reproduction
c) Help in respiration
d) Bears sporangia

14. Fruit body of mushroom consists of:
a) All are correct
b) Annulus
c) Pileus
d) Stipe

15. Which one is not a plant disease:
a) Rust
b) Ring worm
c) Rot
d) Smut

16. Kelps can grow upto:
a) 40 meters
b) 20 meters
c) 50 meters
d) 60 meters

17. Pediastrum is an example of:

a) Unicellular non motile
b) Unicellular motile
c) Colonial non motile
d) Colonial motile

This is more feedback!

This is the feedback!