Plant Anatomy and Physiology MCQ question and answer with solution | Biology Gk MCQs

Alternaria blights of cereals, vegetables and fruit crops are controlled by

In the microspore, the outer variously sculptured layer, sexine remains attached to the nexine by means of

A plant hormone used for inducing morphogenesis in plant tissue culture is

Consider the following statements and choose the correct answer:
1. Average density of soil is 2.65 gms. per ml.
2. The spaces present between soil particles in a given volume of soil are called pore spaces
3. Porosity of the soil decreases with the increase in the percentage of organic matter in the soil
4. Macro-pore spaces have little water holding capacity and allow free movement of moisture and air in the soil under normal condition

The characteristic features of high altitude environment or alpine biome include

Match List-I (Phases of Calvin cycle) with List-II (Reactions) and choose the correct answer:

List-I	List-II
a. Phase I	1. Glycolytic reversal
b. Phase II	2. Regeneration of RUBP
c. Phase III	3. Carboxylation

Pfr form of phytochrome below a critical level will

An increase in the stability of the plants towards high temperature reversal is caused by

Which of the following enzymes is an example of a transferase?

The macro-nutrients provided by inorganic fertilisers are