In case the ovum (female) fertilises with a sperm (male) carrying X-chromosome the zygote develops into a female (XX) and the fertilisation of ovum with Y-chromosome carrying sperm results into a male offspring (XY). Thus, it is evident that it is the genetic makeup of the sperm (male/father) that determines the sex of the child.

Correct Option: B

In case the ovum (female) fertilises with a sperm (male) carrying X-chromosome the zygote develops into a female (XX) and the fertilisation of ovum with Y-chromosome carrying sperm results into a male offspring (XY). Thus, it is evident that it is the genetic makeup of the sperm (male/father) that determines the sex of the child.

In digestive system of living organisms proteins are broken down into amino acids.

Correct Option: D

In digestive system of living organisms proteins are broken down into amino acids.

Cerebrum (a major part of forebrain) is the main thinking part of brain. It has sensory, motor and association areas.

Correct Option: C

Cerebrum (a major part of forebrain) is the main thinking part of brain. It has sensory, motor and association areas.

Darwin (1881) found that bending movement of coleoptile of canary grass (Phalaris canariensis) was due to exposure of tip to unilateral light. Boysen-Jensen (1910, 1911) found that the tip produces a chemical which was later named Auxin.

Correct Option: B

Darwin (1881) found that bending movement of coleoptile of canary grass (Phalaris canariensis) was due to exposure of tip to unilateral light. Boysen-Jensen (1910, 1911) found that the tip produces a chemical which was later named Auxin.

Nucleus, cell membrane, mitochondria and cytoplasm are present in animal cell.

Correct Option: C

Nucleus, cell membrane, mitochondria and cytoplasm are present in animal cell.