Which of the following is incorrect about Cyanobacteria?

1. They are photoautotrophs.

2. They lack heterocysts.

3. They often form blooms in polluted water bodies.

4. They have chlorophyll similar to green plants.

Members of Phycomycetes are found in
(i) Aquatic habitats

(ii) On decaying wood

(iii) Moist and damp places

(iv) As obligate parasites on plants

Choose from the following options.
1. (i) and (iv)

2. (ii) and (iii)

3. All of these

4. None of these

With respect to fungal sexual cycle, choose the correct sequence of events.
1.  Karyogamy, Plasmogamy and Meiosis

2.  Meiosis, Plasmogamy and Karyogamy

3.  Plasmogamy, Karyogamy and Meiosis

4.  Meiosis, Karyogamy and Plasmogamy

The difference between virus and viroid is

Select the correct match

1. Imperfect fungi – Ustilago

2. Agaricus – Club fungus

3. Toadstool – Edible mushroom

4. Smut of wheat – Puccinia graminis

Match the columns.

Select correct option

1. a-p, b-q, c-r, d-s

2. a-s, b-r, c-q, d-p

3. a-q, b-s, c-r, d-p

4. a-q, b-s, c-p, d-r

Animals differ from plants in

1. Being multicellular

2. Having cell wall

3. Being heterotrophic

4. Being eukaryotic

The imperfect fungi such as Trichoderma

1. Reproduce sexually by spore formation

2. Have aseptate mycelium

3. Reproduce asexually by conidia formation

4. Have coenocytic mycelium

The cell wall is impregnated with silica to form transparent siliceous shell in

1. Dinoflagellates

2. Euglenoids

3. Diatoms

4. Slime moulds

Find the odd one with respect to the fungi imperfecti

1. Alternaria

2. Colletotrichum

3. Trichoderma

4. Penicillium