Select the wrong statement.

(1) The walls of diatoms are easily destructible

(2) 'Diatomaceous earth' is formed by the cell walls of diatoms

(3) Diatoms are chief producers in the oceans

(4) Diatoms are microscopic and float passively in water

Match Column I with column II and select the correct option using the codes given below:

Codes:

Chrysophytes, euglenoids, dinoflagellates and slime moulds are included in the kingdom

1. Protista

2. Fungi

3. Animalia

4. Monera

The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the

(1) thermoacidophiles

(2) methanogens

(3) eubacteria

(4) halophiles

One of the major components of cell wall of most fungi is

(1) peptidoglycan

(2) cellulose

(3) hemicellulose

(4) chitin

Which of the following statements is wrong for viroids?

(1) They are smaller than viruses

(2) They cause infections

(3) Their RNA is of high molecular weight

(4) They lack a protein coat

Which one is a wrong statement?

(1) Archegonia are found in Bryophyta, Pteridophyta and Gymnosperms.

(2) Mucor has biflagellate zoospores.

(3) Haploid endosperm is typical feature of gymnosperm.

(4) Brown algae have chlorophyll-a and c, and fucoxanthin.

Keel is the characteristic feature of flower of

(1) tulip

(2) Indigofera

(3) Aloe

(4) tomato

Which one of the following fungi contains hallucinogens?

(1) Morchella esculenta

(2) Amanita muscaria

(3) Neurospora sp.

(4) Ustilago sp.

Archaebacteria differ from eubacteria in

(1) cell membrane structure

(2) mode of nutrition

(3) cell shape

(4) mode of reproduction