Question 1.
Primary phloem develops from
A. lateral meristem
B. protoderm
C. extrastelar cambium
D. provascular tissue
D. provascular tissue
Question 2.
Placenta is the structure formed
A. by the union of foetal and uterine tissue
B. by foetus only
C. by fusion of germ layers
D. None of these
A. by the union of foetal and uterine tissue
Question 3.
Out of proteins, lipids and carbohydrates present in a cell membrane, what is true?
A. Lipids are maximum
B. Carbohydrates are minimum
C. Carbohydrates are maximum
D. All three are in equal proportion
B. Carbohydrates are minimum
Question 4.
Most of the red, blue and purple colours of plants are due to a pigment called
A. anthocyanin
B. carotene
C. chlorophyll
D. xanthophylls
A. anthocyanin
Question 5.
Other than spreading malaria, anopheles mosquitoes are also vectors of
A. dengue fever
B. filariasis
C. encephalitis
D. yellow fever
B. filariasis
Question 6.
Plants hormone that induces cell division is
A. auxins
B. gibberellins
C. kinins
D. domins
B. gibberellins
Question 7.
Potato is a modified form (outgrowth) of:
A. root
B. stem
C. fruit
D. leaf
B. stem
Question 8.
Plants developing in dry conditions are
A. xerophytes
B. mesophytes
C. lithophytes
D. hydrophytes
A. xerophytes
Question 9.
Plants that grow in saline water are called
A. halophytes
B. hydrophytes
C. mesophytes
D. thallophytes
A. halophytes
Question 10.
Neurospora is used as genetic material because
A. it has short life cycle of 10 days
B. the product of single meiosis can be easily analysed
C. meiotic products are linearly arranged in the form of ordered tetrads
D. is a diploid fungus
A. it has short life cycle of 10 days
Question 11.
Of the following taxonomic categories which is the most inclusive (i.e. is the highest in hierarchy)?
A. Order
B. Subspecies
C. Class
D. Genus
C. Class
Question 12.
Plants growing on sand are called as
A. chasmophytes
B. oxylophytes
C. lithophytes
D. psammophytes
D. psammophytes
Question 13.
Pyorrhoea is a disease of the
A. nose
B. gums
C. heart
D. lungs
B. gums
Question 14.
Phloem is a tissue found in
A. reproductive organs of animals
B. plants
C. insects
D. mammals
B. plants
Question 15.
Prothrombin which helps in clotting of blood is released by
A. lymphocytes
B. erythrocytes
C. monocytes
D. blood platelets
D. blood platelets
Question 16.
Our skin, when exposed to excess sunlight, becomes dark. This is because of our skin pigments called
A. flavoxanthin
B. melanin
C. carotene
D. Xanthophyll
B. melanin
Question 17.
O2 released in the process of photosynthesis comes from
A. CO2
B. water
C. sugar
D. pyruvic acid
B. water
Question 18.
N2 content is kept constant in the biosphere due to
A. N2 fixation
B. industrial pollution
C. nitrogen cycle
D. absorption of N2
C. nitrogen cycle
Question 19.
Myopia is connected with
A. ears
B. eyes
C. lungs
D. None of these
B. eyes
Question 20.
Ramapithecus and Cro-Magnon man are considered
A. ancestors of modern man
B. ancestors of monkey
C. ancestors of lion
D. None of the above
A. ancestors of modern man
Biology GK Questions All SET MCQ-
- Biology GK Questions SET-1
- Biology GK Questions SET-2
- Biology GK Questions SET-3
- Biology GK Questions SET-4
- Biology GK Questions SET-5
- Biology GK Questions SET-6
- Biology GK Questions SET-7
- Biology GK Questions SET-8
- Biology GK Questions SET-9
- Biology GK Questions SET-10
- Biology GK Questions SET-11
- Biology GK Questions SET-12
- Biology GK Questions SET-13
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