Plant Kingdom

Read the following statements and choose the set of correct statements: In the members of Phaeophyceae, Choose the correct answer from the options given below:

1. A, B, C and D only
2. B, C, D and E only
3. A, C, D and E only
4. A, B, C and E only

Hydrocolloid carrageen is obtained from :

1. Chlorophyceae and Phaeophyceae
2. Phaeophyceae and Rhodophyceae
3. Rhodophyceae only
4. Phaeophyceae only

Which of the following is incorrectly matched?

1. Ectocarpus - Fucoxanthin
2. Ulothrix - Mannitol
3. Porphyra - Floridian Starch
4. Volvox - Starch

Match List-I with List-II : Choose the correct answer from the options given below

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

Read the following statements and identify the characters related to the alga shown in the diagram : [Figure] Choose the correct answer from the options given below :

1. C, D and E only
2. A and B only
3. A, B and C only
4. A, C and D only

Which of the following algae produce Carrageen?

1. Blue-green algae
2. Green algae
3. Brown algae
4. Red algae

Which of the following algae contains mannitol as reserve food material?

1. Ulothrix
2. Ectocarpus
3. Gracilaria
4. Volvox

Which of the following pairs is of unicellular algae?

1. Gelidium and Gracilaria
2. Anabaena and Volvox
3. Chlorella and Spirulina
4. Laminaria and Sargassum

Floridean starch has structure similar to

1. Amylopectin and glycogen
2. Mannitol and algin
3. Laminarin and cellulose
4. Starch and cellulose

Which one is wrongly matched?

1. Biflagellate zoospores – Brown algae
2. Uniflagellate gametes – Polysiphonia
3. Unicellular organism – Chlorella
4. Gemma cups – Marchantia

An example of colonial alga is

1. Volvox
2. Ulothrix
3. Spirogyra
4. Chlorella

Which one of the following statements is wrong?

1. Algae increase the level of dissolved oxygen in the immediate environment.
2. Algin is obtained from red algae, and carrageenan from brown algae.
3. Agar-agar is obtained from Gelidium and Gracilaria.
4. Laminaria and Sargassum are used as food.

Which one of the following statements is wrong?

1. Chlorella and Spirulina are used as space food.
2. Mannitol is stored food in Rhodophyceae.
3. Algin and carrageenan are products of algae.
4. Agar-agar is obtained from Gelidium and Gracilaria.

Male gametes are flagellated in

1. Ectocarpus
2. Spirogyra
3. Polysiphonia
4. Anabaena.

Which one of the following is wrong about Chara?

1. Upper oogonium and lower round antheridium
2. Globule and nucule present on the same plant
3. Upper antheridium and lower oogonium
4. Globule is male reproductive structure

Which one of the following shows isogamy with non-flagellated gametes?

1. Sargassum
2. Ectocarpus
3. Ulothrix
4. Spirogyra

An alga which can be employed as food for human being is :

1. Polysiphonia
2. Chlorella
3. Ulothrix
4. Spirogyra

Select the wrong statement

1. In Oomycetes, female gamete is smaller and motile, while male gamete is larger and non-motile.
2. Chlamydomonas exhibits both isogamy and anisogamy and Fucus shows oogamy.
3. Isogametes are similar in structure, function and behaviour.
4. Anisogametes differ either in structure, function or behaviour.

Isogamous condition with non-flagellated gametes is found in

1. Volvox
2. Fucus
3. Chlamydomonas
4. Spirogyra.

Monoecious plant of Chara shows occurrence of

1. upper antheridium and lower oogonium on the same plant
2. upper oogonium and lower antheridium on the same plant
3. antheridiophore and archegoniophore on the same plant
4. stamen and carpel on the same plant.

Syngamy can occur outside the body of the organism in

1. mosses
2. algae
3. ferns
4. Fungi

Which one of the following is wrongly matched?

1. Spirogyra - Motile gametes
2. Sargassum - Chlorophyll
3. Basidiomycetes - Puffballs
4. Nostoc - Water blooms

Mannitol is the stored food in

1. Porphyra
2. Fucus
3. Gracilaria
4. Chara

If you are asked to classify the various algae into distinct groups, which of the following characters you should choose?

1. Nature of stored food materials in the cell
2. Structural organization of thallus
3. Chemical composition of the cell wall
4. Types of pigments present in the cell

Sexual reproduction in Spirogyra is an advanced feature because it shows

1. different sizes of motile sex organs
2. same size of motile sex organs
3. morphologically different sex organs
4. physiologically differentiated sex organs.

A student observed an alga with chlorophyll a, d and phycoerythrin, it should belong to

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