NTSE SAT Biology Papers 10

NTSE SAT Biology Papers 10

This is NTSE SAT Biology Papers 10 .. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Pain centres in human brain differentiate between two stimuli on basis of:-
  • A
    There are different neuron in brain to receive different stimuli
    Correct
  • B
    Differences in amplitude of nerve impulses generated by two different stimuli
  • C
    Differences in threshold
  • D
    Differences in frequency of nerve impulses generated by two different stimuli
2
Test cross is a cross between
  • A
    One homozygous and another heterozygous individual
  • B
    One individual with recessive character and another with dominant character of same species
    Correct
  • C
    Two homogygous individuals for a character
  • D
    Two individuals of same species, each homogygous for a character
3
Which of the following statement is true1. Viruses high mutability is related to its nature of genetic material2. Bacteriophage evolved before evolution Bacteria3. Viruses infect only through opening in the body of plants and animals4. Viruses are obligatory intracellular parasites
  • A
    1, 2, 3, 4
  • B
    1 and 3 only
  • C
    1, 3, 4 only
    Correct
  • D
    1, 2, 3
4
Arrange following in the sequence.1. Mutation2. reproductive isolation3. natural selection4. evolution
  • A
    1, 3, 2, 4
  • B
    1, 2, 3, 4
    Correct
  • C
    3, 2, 1, 4
  • D
    4, 3, 2, 1
5
Match the following — Column – I (1) color cells (2) Diploblast (3) Closed Circulatory system (4) Water vascular System Column – II (a) coelenterate (b) Porifera (c) Echinodermata (d) Annelida (e) Arthropoda
  • A
    1-a, 2-b, 3-e, 4-c
  • B
    1-a, 2-b, 3-c, 4-e
  • C
    1-b, 2-a, 3-e, 4-c
    Correct
  • D
    1-a, 2-b, 3-c, 4-d
6
Which of the following plant disease can be controlled by chemical control
  • A
    Fungal disease
  • B
    Viral disease
  • C
    Diseases caused by nematodes
  • D
    All of these
    Correct
7
Assertion- Photosynthesis in minimum in green light Reason – Chlorophylls are green in colour.Direction:-
  • A
    Both assertion and reason are true and reason is correct explanation of assertion
  • B
    Both assertion and reason are true but reason is not correct explanation of assertion
    Correct
  • C
    Assertion is true but reason is false
  • D
    Assertion is false but reason is true
8
Which law is depicted by the above cross?
Question 8 figure 1
  • A
    Law of segregation
  • B
    Law of independent assortment
  • C
    All the three
    Correct
  • D
    Law of dominance
9
Population size is controlled by
  • A
    Demographic transition
  • B
    Carrying capacity of environment
    Correct
  • C
    Death rate
  • D
    Birth rate
10
Hydrophonics is-
  • A
    Growing of aquatic plants
  • B
    Growing of floating aquatic plants
  • C
    Growing of plants inside water
    Correct
  • D
    Soil less cultivation of plants
11
Quinaine is obtained from-
  • A
    Leaves
  • B
    Roots
  • C
    Fruit
  • D
    Bark
    Correct
12
Nocturnal bird is-
  • A
    Pigeon
  • B
    Owl
    Correct
  • C
    Parrot
  • D
    Sparrow
13
Body temperature of human body is-
  • A
    \(42^\circ C\)
  • B
    \(37^\circ C\)
    Correct
  • C
    \(34^\circ C\)
  • D
    \(40^\circ C\)
14
Budding is found in-
  • A
    Papaya
  • B
    Banana
  • C
    Mango
  • D
    Yeast
    Correct
15
The unit of classification is-
  • A
    Order
  • B
    Class
  • C
    Species
    Correct
  • D
    Genus