List of top Botany Questions

Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A): Embryo rescue technique is used for embryo culture. 
Reasons (R): In case of embryo rescue, the objective is to rescue the developing embryo from the egg cell. 
In the light of the above statements, choose the most appropriate answer from the options given below

The citric-acid cycle takes place in

Double-helix structure of DNA is made up of a linear polymer comprised of subunits called

Regulatory portion of plant genes located primarily upstream from the transcription site is called

Genes which code for primary structure of enzymes in operon model are called:

The extra-chromosomal heredity unit, circular in nature is called

Which of the following are autosomal dominant traits?
(A) Colour blindness 
(B) Myotonic dystrophy 
(C) Phenylthio Carbamide Tasting 
(D) Phenylketonuria
(E) Branchydactyly 
Choose the most appropriate answer from the options given below 

Given below are two statements:
Statement I: Rauvolfia serpentina was used by native indians for snake-bite and as tranquilizer for the treatment of mental disorders. 
Statement II: Taxol is a drug obtained from plant Taxus brevifolia which is used for treatment of leprosy. 
In the light of the above Statements, choose the most appropriate answer from the options given below: 

Match List I with List II

	List I-(Scientific Names )		List II-(Common Names)
A	Eugenia caryophyllus	I	Nutmeg
B	Elettaria cardamomum	II	Clove
C	Myristica fragrans	III	Cardamom
D	Carcum carvi	IV	Caraway seed

Choose the correct answer from the options given below: 

Nuclear pores present on nuclear envelope are enclosed by a circular structure called as

Drug 'quinine' used for treatment of malaria is obtained from

Which one of the following plant yields foxnut?

Which plant is known for its orange-red dye from flowers?

Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A) Pollen fixed in Formalin : Acetic acid Alcohol can be used to ascertain fertility but not the viability. 
Reasons (R): Pollen fertility refers to the ability of a plant to produce fertile pollen grains, where as the viability refers to the ability to germinate and produce a pollen tube. 
In the light of the above Statements, choose the most appropriate answer from the options given below:

Mycorrhizal fungi helps in delivery of which key ions to the plant sytem?

Among the following pteridophytes, the initial steps in evolutionary trend of seed development can be best seen in

Match List I with List II

	List I-(Suffix)		List II-(Group Heirarchy)
A	-opsida	I	sub-class
B	-bionta	II	class
C	-inae	III	sub-tribe
D	-idae	IV	Kingdom

Choose the correct answer from the options given below: 

Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A): Gnetum is closer to angiosperms than gymonsperms.
Reasons (R): There is complete elimination of archegonia in the female gametophyte of Gnetum. 
In the light of the above Statements, choose the most appropriate answer from the options given below:

Retort cells are present in

Companion cells which are located close to the sieve tube serve the same function as

The advanced characters exhibited by the members of basidiomycotina include:
(A) No specialized sex organ are formed 
(B) Several types of spore in the life-cycle 
(C) Spores are endogenous in nature 
(D) Formation of dikaryotic cells by clamp connection 
(E) Presence of dolipore septa 
Choose the most appropriate answer from the options given below

Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A): Cotton and linen textiles have long durability due to cellulose's side- by-side aggregates which form molecular cables. 
Reasons (R): Durability of cellulose is due to a-(1-6) glycosidic bonds. 
In the light of the above Statements, choose the most appropriate answer from the options given below:

Many fungi have no known sexual stages in their life-cycle. Mycologists have traditionally grouped such fungi into

Covered smuts' disease in Barley is caused by

Ergotism, which is characterized by gangrene, nervous spasm, burning sensation, hallucinations and temporary 'insanity' is caused by