Question # 1

The loss of water in the form drops from tips of leaf is called.

Evaporation

Transpiration

Guttation

Excretion

All of these are hormones except:

Insulin

Thyroxin

Glucagon

Pepsinogen

These are unit of inheritance.

Genes

Alleles

Phenotype

Genotype

In plants, gaseous exchange takes place as:

CO2 is removed and O2 is absorbed

CO2 is absorbed and O2 is removed

CO2 and O2 both are absorbed

CO2 and O2 both are removed

The basic tropic level of all food chain is.

Producers

Consumers

Decomposers

Reducers

The length of human kidney is.

27 cm

4cm

5 cm

10 cm

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