Imprimer Test: BIOLOGY QUIZ ()

1.

Which of the following plants flowers only once in twelve years?

A.

Catharanthus roseus

B.

Primula sinensis

C.

Strobilanthus kunthiana

D.

Antirrhinum majus

2.

Smallest Gymnosperm is -

A.

Cycas revoluta

B.

Pine

C.

Zamia pygmaea

D.

Redwood tree

3.

This diagram is a cross section of-

A.

Bacterial flagellum

B.

Eukaryotic flagellum

C.

Centriole

D.

Chromosome

4.

The heart sound dub is due to the closure of -

A.

Eustachian valve

B.

Thebesian valve

C.

Mitral valve

D.

Semilunar valve

5.

Find out right statements among the given below. 1. In a given limit, rise in substrate concentration increases enzymatic activity 2. Competitive inhibitors can be used to treat bacterial infections 3. Enzymes increase the energy of activation of a substrate molecule

A.

Only 1 is correct

B.

1 and 2 are correct

C.

1 and 3 are correct

D.

1,2 and 3 all are correct