The best method to determine the age of tree is
1). To measure its diameter
2). To count the number of leaves
3). To count the number of annual rings in the main stem at the base
4). To measure its height
Nerve impulses are conducted towards the cell body by
1). Axons
2). Ganglia
3). Dendrites
4). Neurons
White Revolution is related to the increase in production of
1). egg
2). wool
3). milk
4). meat
If a dihybrid pea plant heterozygous for flower colour (red dominant over white) and seed shape (round dominant over wrinkled) under goes selfing, the types of gametes produced are:
1). 2
2). 4
3). 8
4). 16
The genotype of a dominant parent is determined by crossing it with the recessive parent. This cross is called
1). back cross
2). test cross
3). long cross
4). out cross