How many chromosomes are there in endosperm cell of Zea mays?
Options
(a) forty (b) twenty (c) thirty (d) ten
Correct Answer:
thirty
Explanation:
Endosperm is triploid in maize. In maize, 2n=10. So, […]
In India, tropical rain forests are found in
Options
(a) Darjeeling (b) Andamans (c) Karnataka (d) Jammu and Kashmir
Correct Answer:
Andamans
Explanation:
No explanation available. Be the first to write the explanation […]
Which of the following is called emergency gland of the body?
Options
(a) testis (b) adrenal (c) thymus (d) pituitary
Correct Answer:
adrenal
Explanation:
No explanation available. Be the first to write the […]
Linkage was discovered by
Options
(a) Miller (b) Morgan (c) De Vries (d) Mendel
Correct Answer:
Morgan
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
The Earliest fossil form, in the phylogeny of horse, is
Options
(a) Eohippus (b) Equus (c) Merychippus (d) Mesohippus
Correct Answer:
Eohippus
Explanation:
No explanation available. Be the first to write the explanation […]
Some effects of sulphur dioxide and its transformation products on plants include
Options
(a) plasmolysis (b) protein dis-integration (c) Golgi body destruction (d) chlorophyll destructon
Correct Answer:
chlorophyll destructon
Explanation:
No explanation available. […]
The process of micropropagation is the formation of new plants from
Options
(a) tissue (b) vegetative cells (c) plant parts (d) either tissue or plant parts
Correct Answer:
either tissue or plant parts
Which one of the following is a single membrane structure?
Options
(a) lysosomes (b) chloroplast (c) mitochondria (d) nucleus
Correct Answer:
lysosomes
Explanation:
A lysosome is a tiny sac bounded by a single unit […]
Embryo sac is also known as
Options
(a) microgametophyte (b) microsporangium (c) megagametophyte (d) megasporangium
Correct Answer:
megagametophyte
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Gigantism and acromegaly are caused due to increase of
Options
(a) CH (b) STH (c) ADH (d) LH
Correct Answer:
STH
Explanation:
No explanation available. Be the first to write the explanation for […]
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