Rhodophyceae

Q.

Draw a T.S of a young anther of an angiosperm. Label the different layers of the wall and write their functions. [3 Marks]

Q. Match the plant with the kind of life cycle it exhibits:

List-I	List-II
(a) Spirogyra	(i) Dominant diploid sporophyte vascular plant, with highly reduced male or female gametophyte
(b) Fern	(ii) Dominant haploid free-living gametophyte
(c) Funaria	(iii) Dominant diploid sporophyte alternating with reduced gametophyte called prothallus
(b) Cycas	(iv) Dominant haploid leafy gametophyte alternating with partiaIly dependent multicellular sporophyte

Choose the correct answer from the options given below:

1. (a)- (iv), (b)-(i), (c)-(ii), (d)- (iii)
2. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
3. (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
4. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

Q. Match the following:

Column I	Column II
A. Ancylostoma	I. Filarial worm
B. Wuchereria	II. Hook worm
C. Taenia	III. Pork tapeworm
D. Fasciola	IV. Liver fluke

1. A-II, B-I, C-III, D-IV
2. A-II, B-III, C-I, D-IV
3. A-II, B-IV, C-III, D-I
4. A-I, B-III, C-IV, D-II

Q.

Asexual reproduction by non motile spores is observed in

1. Chlorella

2. Laminaria

3. Spirogyra

4. Gracilaria

Q.

What is the botanical name of potato and tomato?

Q.

Explain the reproduction in the moss plant.

Q.

What are the examples of Rhodophyceae?

Q.

Can basidiomycetes reproduce asexually?

Q.

What does Homosporous mean?

Q. Choose the correct match.

1. Phaeophyceae - mannitol, chlorophyll a, c
2. Rhodophyceae - floridean starch, chlorophyll a, d
3. Chlorophyceae - starch, chlorophyll a, b
4. Rhodophyceae - mannitol, chlorophyll a, d

Q. Red algae are found growing in the great depths of the ocean. This is due to the presence of

1. cellulose in their cell wall
2. algin in their cell wall
3. phycoerythrin in the plastids
4. chlorophyll in the chloroplast

Q.

Double fertilization is exhibited by?

1. fungi

2. algae

3. gymnosperm

4. angiosperm

Q.

The process of RNA interference has been used in the development of plants resistant to?

1. Insects

2. Nematodes

3. Viruses

4. Fungi

Q. Cyanobacteria differ from bacteria as these:

1. Perform oxygenic photosynthesis
2. Exhibit sexual reproduction
3. Do not have membrane bound cell organelles
4. Have circular double stranded DNA

Q. Pick the option which includes all the correct statements from the following.

A. Chlorophyceae: Chlorophyll a and chlorophyll c pigments, starch-stored as food, asexual reproduction by zoospores.

B. Phaeophyceae: Fucoxanthin pigment, mannitol-stored as food, pear-shaped zoospores with 2, unequal sized apical flagella.

C. Rhodophyceae: Phycoerythrin pigment, floridean starch, reproduction by non-motile spore.

1. Only B
2. Only C
3. A, B and C
4. Only A

Q.

Why is cyanobacteria called photosynthetic autotrophic bacteria?

Q. Agar is obtained from

1. Gelidium
2. Spirogyra
3. Fucus
4. Chondrus

Q. Iodine is obtained from the members of

1. blue-green algae
2. red algae
3. green algae
4. brown algae

Q. I. Unicellular, colonial, filamentous, marine or terrestrial forms
II. The colonies are surrounded by a gelatinous sheath
III. Some can fix atmospheric nitrogen in specialised cells called heterocysts
IV. They often form blooms in water bodies
These above characters are seen in

1. Chrysophytes
2. Dinoflagellates
3. Archaebacteria
4. Cyanobacteria

Q. Pseudopenis and titillatorare parts of

1. Leftphallomere
2. rightphallomere
3. ventralphallomere
4. dorsalphallomere

Q.

Does Moss reproduce asexually?

Q.

Can angiosperms reproduce asexually?

Q. The pigments phycocyanin and phycoerythrin are present in:

1. Rhodophyceae
2. Chlorophyceae
3. Eubacteria
4. Cyanobacteria

Q. Which algal division never motile flagellated cells among any of its members?

1. Chlorophyta
2. Rhodophyta
3. Phaeophyta
4. Chrysophyta

Q. Spermatozoa receive nutrition from

1. Nurse glands
2. Interstitial cells
3. Germ cells
4. Epididymis

Q.

Are diatoms chrysophytes?

Q. Iodine is obtained from the members of

1. blue-green algae
2. red algae
3. green algae
4. brown algae

Q. Which class of algae reproduces asexually by non-motile spores and sexually by non-motile gametes?

1. Rhodophyceae
2. Chlorophyceae
3. Phaeophyceae
4. Cyanophyceae

Q.

Do Gymnosperms have chlorophyll?

Q.

How fast do algae multiply?