Algae

Q.

Find the odd one out with respect to haplontic life cycle.

1. Chlamydomonas

2. Ectocarpus

3. Spirogyra

4. Ulothrix

Q.

What are benefits of algae?

Q.

Gametophyte is dominant stage in the life cycle of

1. angiosperms

2. pteridophyta

3. gymnosperms

4. bryophyta

Q.

The members of Rhodophyceae algae are red in colour even though they have both chlorophyll a&b. This is due to the presence of a pigment called

1. Xanthophyll

2. Phycocyanin

3. Phycobilin

4. Phycoerythrin

Q.

Desmids are also called

1. Slime moulds

2. Mycoplasma

3. Golden algae

4. Blue-green algae

Q. Algae occurs in a symbiotic association with

1. fungi
2. animals
3. plant roots
4. both a and b

Q.

Some hyperthermophilic organisms that grow in highly acidic (pH-2) habitats belong to the two groups

1. protists and mosses

2. liverworts and yeasts

3. eubacteria and archaea

4. cyanobacteria and diatoms

Q.

Agar is commercially received from

1. Blue-green algae

2. Green algae

3. Red algae

4. Brown algae

Q.

The life cycle of cord moss is

1. Haplodiplontic

2. Diplontic

3. Haplohaplontic

4. Haplontic

Q.

The yellow-green pigment is found in

1. Rhodophyta

2. Chlorophyta

3. Xanthophyta

4. Phaeophyta

Q. Megagametogenesis is the process of

1. formation of female gametophyte from the precursor cell
2. formation of megaspore from the megaspore mother cell
3. formation of female gametophyte from the megaspore
4. formation of female gametophyte from the megaspore mother cell

Q.

The earliest ancestors of higher plants are

1. Algae

2. Fungi

3. Bacteria

4. Euglenoids

Q.

An incorrect character of brown algae is

1. Presence of fucoxanthin

2. It remains attached to the substratum

3. Presence of chlorophyll a and b

4. Presence of chlorophyll a and c

Q. what are the characteristics of photosynthetic bacteria

Q.

What is the basis of classification of algae?

Q.

what are the difference b/w PhotoSystem- 1 and PS- 2 .(all the differences)

Q. In haplontic life cycle, meiosis occurs during

1. Gamete formation
2. Spore formation
3. Zygote germination
4. Spore germination

Q.

How come 'non-green' forms of algae are clubbed together with the green chlorophyllous algae in the same plant kingdom division?

1. They contain chlorophyll for photosynthesis

2. They share high structural similarity

3. All of the above

4. They share similar physiology

Q. Choose the incorrect statement regarding regeneration and fragmentation.

1. In fragmentation, an organism splits into fragments each of which can give rise to new organisms. In regeneration, a part of the body may be regenerated and not necessarily a whole organism.
   
2. Fragmentation involves specialised cells and complex differentiation processes to generate a whole organism while regeneration does not.
3. Fragmentation occurs in multicellular species with simple body organization while regeneration can occur in multicellular species with complex body plans.
4. Fragmentation is exhibited by invertebrates while regeneration is exhibited by both vertebrates and invertebrates.
   

Q. Assertion: Algae and fungi are classified under thallophytes.
Reason: Both of them require nutrients from soil.

1. Both A and R are correct and R is the correct explanation of A
2. Both A and R are correct and R is not the correct explanation of A
3. A is correct but R is incorrect
4. Both A and R are incorrect

Q.

In Chlorophyceae, sexual reproduction occurs by

1. Isogamy and anisogamy

2. Oogamy only

3. Anisogamy and oogamy

4. Isogamy, anisogamy and oogamy

Q. Algae belongs to which kingdom?? Protista or plantae??

Q.

Cilia and flagella are

1. Analogous structures

2. Homologous structures

3. Ergastic substances.

4. None of the above

Q.

Which of the following is responsible for guttion.

a. Transpiration

b. Root pressure

c. Photosynthesis

d. Turgid pressure

Q Transpiration cohesion tension theory operates in

a. Passive b. Active c. a&b both d.none

Q.

Mannitol is the stored food in

1. Chara

2. Porphyra

3. Fucus

4. Gracilaria

Q.

what are the common difference between gram positive and gram negetive bacteria ? and on what basis they are classified ?

Q.

At least 3 examples of red and brown algae

Q.

Macrocyst formation occurs in cellular slime moulds during

1. asexual reproduction

2. Unfavourable conditions

3. sexual reproduction

4. formation of pseudopodium

Q.

what is the reserved food in red algae called?

Q.

Which of the following kingdoms of Whittaker is considered as a “grab-bag” of unnatural assemblage of organisms?

1. Monera

2. Protista

3. Mycota

4. Animalia