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51.

Alternative forms of a gene is known a:

A.	Mutation	B.	Gamete
C.	Allele	D.	Genotype

52.

An anticodonis a sequence of three nitrogenous bases found on:

A.	DNA	B.	mRNA
C.	rRNA	D.	tRNA

53.

An association can be:

A.	Hydrophytic	B.	Halophytic
C.	Xerophytic	D.	All of the above

54.

An egg or sperm cell in plants is called:

A.	Gene	B.	Gamete
C.	Zygote	D.	None of them

55.

An embryo sac of angiosperms generally contains:

A.	Two nuclei	B.	Three nuclei
C.	Four nuclei	D.	Eight nuclei

56.

An endospermic cell of a seed after somatic chromosome number (2n = 20) will have:

A.	30 Chromosomes	B.	20 Chromosomes
C.	10 Chromosomes	D.	40 Chromosomes

57.

An individual having different alleles for any gene pair and producting two kinds of gametes is known as:

A.	Hemizygous	B.	Homozygous
C.	Heterozygous	D.	Heterogenous

58.

An organism having the gametic chromosome numbers is called as:

A.	Genome	B.	Hybrid
C.	Gamete	D.	Haploid

59.

An organism with one extra chromosome (2n + 1), is instead of the normal diploid (2n) is known as:

A.	Monoploid	B.	Monosomic
C.	Trisomic	D.	Tetrasonic

60.

Ascending portion of the axis of the plant, developing directly from the plumule and bears leaves, braches and flower is known as:

A.	Root	B.	Steam
C.	Modified root	D.	None of above