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botany MCQs with Explanations - Chapter-wise Practice Questions
Q. 4 of Quiz- (Que-ID : 3097)
The process of conversion of NO2– to N2 is called
- nitrification
- ammonification
- denitrification
- nitrogen fixation
Q. 23 of Quiz- (Que-ID : 3516)
The worst dangerous threat to wild life is by
- Habitat destruction
- Hunting
- Overgrazing
- Exotic species
Q. 11 of Quiz- (Que-ID : 3354)
Hisardale is a new breed of sheep developed in Punjab by crossing
- Merino ram and Bikaneri ewe
- Assel ram and White leghorn ewe
- Rhode Island ram and White leghorn ewe
- Cochin ram and Ghagus ewe
Q. 1 of Quiz- (Que-ID : 2994)
Golgi complex and endoplasmic reticulum cannot be seen during
- late telophase
- late prophase
- early anaphase
- late metaphase
Q. 22 of Quiz- (Que-ID : 3515)
Which group of vertebrates comprises the highest number of endangered species?
- Fishes
- Reptiles
- Birds
- Mammals
Q. 13 of Quiz- (Que-ID : 3056)
Which of the following acts as mobile carrier for transfer of electrons between complex III and complex IV?
- Cytochrome c
- cytochrome a3
- cytochrome a
- FADH2
Q. 22 of Quiz- (Que-ID : 2865)
Both chasmogamous and cleistogamous flowers are present in
- Helianthus
- Commelina
- Rosa
- Gossypium
Q. 15 of Quiz- (Que-ID : 3108)
Phytotron is meant for
- Controlled humidity
- Induction of mutations
- Controlled irradiation
- Growing plants under controlled environment
Q. 11 of Quiz- (Que-ID : 2929)
Rate of mutation is affected by
- temperature
- X rays
- gamma rays
- all of these
Q. 16 of Quiz- (Que-ID : 3109)
Toxicity of which element leads to the appearance of brown spots on leaves
- Mg
- Mn
- Fe
- Cu
Q. 1 of Quiz- (Que-ID : 3019)
Mechanism of development was explained by
- Hans Dietrisch
- Spemann
- Both a and b
- Haemmerling
Q. 1 of Quiz- (Que-ID : 3219)
In tamarind, the pinnate leaf is
- bipinnate
- tripinnate
- paripinnate
- imparipinnate
Q. 22 of Quiz- (Que-ID : 3240)
Spinous xerophytic herb belonging to solanceae is
- Solanum tuberosum
- S. nigrum
- S. xanthocarpum
- S. melongena
Q. 23 of Quiz- (Que-ID : 2866)
Polygonum type of embryo sac is
- 8 – nucleate, 7 – celled
- 8 – nucleate, 8 – celled
- 7 – nucleate, 7 – celled
- 4 – nucleate, 3 – celled
Q. 5 of Quiz- (Que-ID : 2998)
Karyokinesis is the term used for
- division of cytoplasm
- division of nucleoplasm
- division of nucleus
- separation of daughter chromosomes
Q. 21 of Quiz- (Que-ID : 2939)
Law of independent assortment can be explained with the help of
- dihybrid
- test cross
- back cross
- monohybrid cross
Q. 21 of Quiz- (Que-ID : 3239)
The aleurone layer in maize grain is especially rich in
- auxins
- proteins
- starch
- lipids
Q. 7 of Quiz- (Que-ID : 3100)
Chlorosis will occur if a plant is grown in
- dark
- shade
- strong light
- Fe – free medium
Q. 20 of Quiz- (Que-ID : 3288)
Pinus differs from mango in having
- Tree habit
- Green leaves
- Ovules not enclosed in ovary
- Wood
Q. 8 of Quiz- (Que-ID : 3276)
Which of the following is used to grow microbes?
- Laminaria
- Gelidium
- Chlorella
- Sargassum
Q. 17 of Quiz- (Que-ID : 3110)
Presence of phosphorus
- brings about healthy root growth
- promotes fruit ripening
- retards protein formation
- none
Q. 6 of Quiz- (Que-ID : 3224)
The largest petal overlaps the lateral ones in _________ aestivation.
- Papilionaceous
- Valvate
- Twisted
- Imbricate
Q. 20 of Quiz- (Que-ID : 3238)
The embryo in sunflower has
- one cotyledon
- two cotyledons
- many cotyledons
- no cotyledon
Q. 11 of Quiz- (Que-ID : 3004)
Meiosis occurs for the human female in ______.
- Pancreas
- Liver
- Ovary
- Kidney
Q. 18 of Quiz- (Que-ID : 2861)
Plants with ovaries having only one or a few ovules are generally pollinated by
- bees
- Butterflies
- birds
- Wind
Q. 25 of Quiz- (Que-ID : 3143)
ψp denotes to
- Water potential
- Negative potential
- Pressure potential
- Solute potential
Q. 24 of Quiz- (Que-ID : 3017)
Crossing over results the exchange of genetic material, which occurs between
- Non-sister chromosomes
- Sister chromatids
- Non-homologous chromosome
- Homologous chromosomes
Q. 3 of Quiz- (Que-ID : 3046)
The complete oxidation of pyruvate take place in
- cell cytoplasm
- inner mitochondrial membrane
- mitochondrial matrix
- nucleus
Q. 13 of Quiz- (Que-ID : 3356)
Artificial insemination involves
- super ovulation
- semen collection
- egg collection
- embryo collection
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