CSS :: Agriculture Genetics Plant Breeding and Biotechnology

@ : Home > Agriculture > Agriculture Genetics Plant Breeding and Biotechnology

For students in search of

21.

A generative nucleus in the male gametophyte divides _____ to form two male gametes:

A.	Mitotically	B.	Meiotically
C.	Mitotically and Meiotically	D.	None of these

22.

A head or capitulum's is characteristic of:

A.	Compositeae	B.	Umbelliferae
C.	Solanaceae	D.	Gramineae

23.

Zamikand and Taro (Colocasia) are example of:

A.	Rhizome	B.	Tuber
C.	Bulb	D.	Corm

24.

A homozygous line developed by self-fertilization in a cross-pollinated crop is termed as:

A.	Pureline	B.	Inbred
C.	Clone	D.	Mutant

25.

A hybrid is always:

A.	Heterozygous	B.	Homozygous
C.	Both of the above	D.	Often homozygous

26.

A large unit of natural vegetation in an area under identical condition (climatic) is called:

A.	Plant formation	B.	Association
C.	Community	D.	Climax

27.

A maintainer line is:

A.	Male fertile and can restore fertility	B.	Male sterile but can restore fertility
C.	Male sterile but cannot restore fertility	D.	Male fertile but cannot restore fertility

28.

A male child would be born to parents if:

A.	The father is healthier than the mother	B.	The mother eats well during pregnancy
C.	The genetic composition of the child includes XY combination of chromosomes	D.	The genetic composition of the child includes XX combination of chromosomes

29.

A male gametophyte in angiosperms contains:

A.	One gametes only two male gametes only	B.	Two male gamete only
C.	Two male gametes and one tube nucleusnucleus	D.	One male gamete and one tube nucleus

30.

A mendelian population means:

A.	Self-pollinated population	B.	Inbred population
C.	Random-mating population	D.	Hybrid population