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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)
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
Trophozoite
B
Schizont
C
Merozoite
D
Sporozoite
- Asafoetida
A
I and IV
B
III Only
C
II and III
D
I only
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
Lycophyta
B
Psilophyta
C
Filicophyta
D
Hysterophyta
The strength of trees are due to the presence of _________ tissues
A
Phloem, parenchyma
B
Xylem, sclerenchyma
C
Parenchyma, sclerenchyma
D
Xylem, phloem
Which of the following pair is not a natural pesticide?
A
Castor Oil and Turmeric
B
Malathion and DDT
C
Neem and Castor Oil
D
Turmeric and Neem
In the grasslands, trees do not replace the grasses as a part of an ecological succession because of
A
Water limits and fire
B
None of the above
C
Insects and fungi
D
Limited sunlight and paucity of nutrients
Improper handling and storage of cereal grains and oilseeds result in the production of toxins known as aflatoxins which are not generally destroyed by normal cooking process. Aflatoxins are produced by
A
Viruses
B
Moulds
C
Protozoa
D
Bacteria
Which one of the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms?
A
Habitat
B
Home range
C
Ecological niche
D
Ecotone
Eugenia caryophyllus is the botanical name of
A
Clove
B
Eucalyptus
C
Coriander
D
Cardamom
The younger, outermost wood, which is living wood in a growing tree, is known as
A
White wood
B
Sap wood
C
Soft wood
D
Outer wood
The xylem in plants are responsible for
A
Transport of oxygen
B
Transport of amino acids
C
Transport of water
D
Transport of food
Air pollution effects on plants are mostly found on
A
Roots
B
Stems
C
Leaves
D
Flowers
In plants, water is absorbed by the root hairs, by a process called
A
Osmosis
B
Perspiration
C
Transpiration
D
Respiration
Which one of the following is responsible for converting milk into curd
A
Bacteria
B
Insects
C
Fungi
D
Virus
1
2
3
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