NEET BIOLOGY

DAILY BIOLOGY TEST QUESTIONS

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Question Bank

1 Structural Organisation in Animals

If the mouth of frog is kept open for some time, it dies because it is unable to

1) Eat
2) Drink
3) Breath
4) None

Option 1

Option 2

Option 3 Solution:

SOLUTION

Frogs breathe via positive pressure because they have no diaphragm. Since they have no diaphragm, they need to force air into their lungs by decreasing the size of their oral cavity and closing off their external nares. If their mouth is open for some time, it may die as it will not be able to breathe.

Option 4

Mendel's discovery that characteristics are inherited due to the transmission of hereditary factors resulted from his

careful microscopic examinations of genes and chromosomes
dissections to determine how fertilization occurs in pea plants
breeding experiments with many generations of fruit flies
analysis of the offspring produced from many pea plant crosses

Option 1

Option 2

Option 3

Option 4 Solution:

Gregor Mendel used simple mathematics and kept careful records of his pea plant crossed to arrive at his conclusions. He did know about genes and did no dissections.

Adipose cells contain
1. glycogen
2. protein
3. fat
4. none of these

Option 1

Option 2

Option 3 Solution:

Option 4

Prototherian mammals like platypus are good examples for:

(1) Viviparous type
(2) Oviparous type
(3) Ovoviparous type
(4) Parthenegenic type

Option 1

Option 2 Solution:

Option 3

Option 4

CAZRI is situated at

1) Nagpur 2) Jodhpur

3) Palampur 4) Bilaspur

Option 1

Option 2 Solution:

Option 3

Option 4

6 Molecular Basis of Inheritance

Interferon is

1) Vector DNA
2) Donar DNA
3) Antiviral Protein
4) Growth hormone

Option 1

Option 2

Option 3 Solution:

Option 4

The concept that new varieties of organisms are still evolving is best supported by the

increasing need for new antibiotics
increasing number of individuals in the human population
decreasing number of new fossils discovered in undisturbed rock layers
decreasing activity of photosynthetic organisms due to warming of the atmosphere

Option 1 Solution:

It is believed that certain pathogens have adapted to the antibodies that we have, becoming resistant. These species are actually evolving, or changing through time, to include the resistant gene for the antibiotics. Therefore the pathogens with the gene survive, and pass on the resistant gene, which causes it to increase.

Option 2

Option 3

Option 4

8 Structural Organisation in Animals

Which of the following is exonephric nephridia?

1) Pharyngeal nephridia
2) Septal nephridia
3) Integumentary nephridia
4) Integumentary and pharyngeal nephiridia

Option 1

Option 2

Option 3 Solution:

SOLUTION

Nephridia are the major excretory organs which help to remove the metabolic waste.
Integumentary nephridia lie scattered on the entire inner or parietal surface of body wall in each segment, except the first two.
There are 200-250 nephridia in each segment.
Integumentary nephridia are V-shaped and lack nephrostomes.
Their terminal duct opens on body surface independently through minute openings, known as nephridiopore. They are thus known as exonephric.

Option 4

9 The Living World

Thanatology is the science that deals with
1) Death in all its aspects
2) Solving paternity of child
3) Identification of living
4) Detection of lie

Option 1 Solution:

Answer

Thanatology : the description or study of the phenomena of death and of psychological mechanisms for coping with them.
For paternity testing - DNA paternity testing is the use of DNA profiling (known as genetic fingerprinting)

Lie detection, also referred to as deception detection or polygraph test, uses questioning for detection of lie

Option 2

Option 3

Option 4

10 The Living World

Which one of the following generates new genetic combinations leading to variation ? 
1) Sexual reproduction
2) Nucellar polyembryony
3) Vegetative reproduction
4) Parthenogenesis

Option 1 Solution:

Answer

Sexual reproduction :the production of new living organisms by combining genetic information from two individuals of different types (sexes). Since both individuals have different genetic make up so variation is maximum
Nucellar polyembryony :Zygotic and nucellar embryos can occur in the same seed, and a zygotic embryo can divide to produce multiple embryos. . Thus same genetic material with little variation.
Vegetative reproduction : A form of asexual reproduction in plants, in which multicellular structures become detached from the parent plant and develop into new individuals that are genetically identical to the parent plant.
Parthenogenesis reproduction from an ovum without fertilization

Option 2

Option 3

Option 4

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