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Home
Questions & Answer
Science Questions & Answers
Botony Questions & Answers
Botony Questions & Answers
(Compiled from UPSC, SSC ,PSC ,IBPS previous question papers)
Which, part of the potato plant do we eat?
A
Stem
B
Flower
C
Seed
D
Root
Biological Oxygen Demand (BOin a river water
A
Increases when sewage gets mixed with river water
B
Gives a measure of Salmonella in the water
C
Remains unchanged when algal bloom occurs
D
Has no relationship with concentration of oxygen in water
When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and dies because
A
Tree is infected by soil microbes
B
Roots do not receive oxygen for respiration
C
Roots are starved of energy
D
Water from soil cannot rise to aerial parts
Edible mushrooms are
A
Agarics bisporous
B
Rizopus
C
Mucor
D
Neurospora
The method of respiration which takes place in euglena is
A
Contraction
B
Absorption
C
Diffusion
D
Conduction
Which one of the following is a short day plant
A
Mirabillis
B
Nicotiana tobacum
C
Beta vulgaris
D
Spinacea oleracea
Which one of the following is not a kind of cell of xylem tissue
A
Trachcids
B
Tracheae
C
Companion Cells
D
Wood fibers
The deficiency of Molybdenum. a trace element present in the soil causes
A
Red rot of sugarcane
B
Whiptail disease of Cauliflower
C
White rust disease of Amaranthus
D
Black rust disease of wheat
Longitudinal half of the chromosome is called
A
Centromere
B
Chromatid
C
Chromatin
D
None of these
In mitochondria,Which of the following processes takes(s) places
A
Tricarboxylic acid cycle
B
Electrotransport system and oxidative phosphorylation
C
ß-oxidation of fatty acid
D
All of these
Which of the following structures is involved in the process of photo-respiration
A
Lysosome
B
Golgi body
C
Peroxisome
D
Ribosome
An exapmple of polyearpic plant is
A
Pea
B
Mango
C
Bamboo
D
Pigeon Pea
The bacterial cell wall consists of
A
Cellulose
B
Lignin
C
Mucopeptide
D
Pectose
The single membrane surrounding vacuoles in plant cells is known as
A
Apoplast
B
Symplast
C
Tonoplast
D
Chloroplast
Amoebic dysentery is caused by
A
Entamoeba coli
B
Entamoeba coli
C
Entamoeba histolytica
D
Amoeba proteus
The infectious stage of Plasmodium is
A
Sporozoite
B
Merozoite
C
Schizont
D
Trophozoite
Which one of the following statement(s) about Blue Green Algae (BGis/are not correct
A
Sargassum belongs to BGA
B
Spirulina is the edible form of BGA
C
They have survived for about 3 billion years
D
They are gram negative photosynthetic cyanobacteria
The chromonema is a coiled structure, which can be easily separated in case of
A
Telonemic coil
B
Chromonemic coil
C
Plectonemic coil
D
Paranemic coil
In 1905, Albert Einstein discovered
A
Photoelectric effect, special theory relativity and Brownian motion
B
Special theory of relativity and photoelectric effect
C
Brownian motion and theory of relativity
D
Photoelectric effect and Brownian motion
The colour of tomato fruits is due to the presence of
A
Flavonoids
B
Tannins
C
Anthocyanins
D
Carotenoids
Which of the following is odd one out
A
Psilophyta
B
Filicophyta
C
Hysterophyta
D
Lycophyta
The strength of trees are due to the presence of _________ tissues
A
Phloem, parenchyma
B
Parenchyma, sclerenchyma
C
Xylem, sclerenchyma
D
Xylem, phloem
Which of the following pair is not a natural pesticide?
A
Castor Oil and Turmeric
B
Turmeric and Neem
C
Malathion and DDT
D
Neem and Castor Oil
Biological Oxygen Demand (BOin a river water
A
Increases when sewage gets mixed with river water
B
Gives a measure of Salmonella in the water
C
Has no relationship with concentration of oxygen in water
D
Remains unchanged when algal bloom occurs
Which, part of the potato plant do we eat?
A
Stem
B
Flower
C
Seed
D
Root
Which one of the following is responsible for converting milk into curd
A
Bacteria
B
Fungi
C
Insects
D
Virus
In plants, water is absorbed by the root hairs, by a process called
A
Perspiration
B
Osmosis
C
Transpiration
D
Respiration
When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and dies because
A
Roots do not receive oxygen for respiration
B
Tree is infected by soil microbes
C
Roots are starved of energy
D
Water from soil cannot rise to aerial parts
Air pollution effects on plants are mostly found on
A
Roots
B
Stems
C
Flowers
D
Leaves
The xylem in plants are responsible for
A
Transport of amino acids
B
Transport of oxygen
C
Transport of water
D
Transport of food
1
2
3
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