Biology Test 34...

Assertion : One single maize root apical meristem can give rise to more than 17,500 new cells per hour.

Reason : This growth is expressed as increase in size of the cell.

Which of the following is incorrect regarding rules of binomial nomenclature?

Assertion : Cyclic photophosphorylation is shown by both PS-I and PS-II

Reason : In cyclic phosphorylation the electron moves from PS-I to PS-II and PS-II to PS-I.

Which of the following statements with respect to algae are correct.

(i) Fusion between one large, non-motile female gamete and a smaller, motile male gamete is termed as oogamous.

(ii) Fusion of two gametes dissimilar in size is termed as isogamous.

(iii) Fusion of two gametes similar in size is called anisogamous.

(iv) In chlorophyceae, the major pigments are chlorophyll a and b , and the food is stored as starch.

(v) In rhodophyceae, the major pigments are chlorophyll a and d , and the food is stored as mannitol.

The ability of plants to follow different pathways in response to environment leading to formation of different kinds of structures is called:

The phenomenon by which the undividing parenchyma cells start to divide mitotically during plant tissue culture is called as:

The gaseous plant growth regulator is used in plants to :

The plant hormone used to destroy weeds in a field

Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.