Correct Answer:
(A)
Blue-green algae
Blue-green algae is the oldest organism on earth. They obtain their energy through photosynthesis. They are also known as Cyanobacteria. By producing gaseous oxygen as a by-product of photosynthesis, they played a greater role in dramatically changing life forms on earth by stimulating biodiversity.
Ques:
2
Darwin's theory of natural selection is based on –
Correct Answer:
(D)
All of the above
Charles Robert Darwin was an English geologist and best known for his contribution to evolution theory. Darwin published his theory of evolution in his book 'On the Origin of Species" in 1859. It states that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual's ability to compete, survive and reproduce. It is called Darwinian theory.
Ques:
3
Who explained first the evolution of life?
Correct Answer:
(D)
Lamarck
French biologist Lamarck is best known for his "Theory of Inheritance of Acquired Characters", first presented in 1801. He was the first person to explain the theory of evolution to the public. In 1809, this theory was published in his book 'Philosphie Zoologique'.
Ques:
4
Match List-I with List-II and select the correct answer using the codes given below/the lists:
List-I List-II
A. Theory of mutation 1. Beadle and Tatum
B. Theory of evolution 2. Jacob and Monod
C. One gene one enzyme 3. Darwin hypothesis
D. Operon concept 4. De Vries
Code:
A B C D
Correct Answer:
(B)
4 3 1 2
Theory of mutation - De Vries
Theory of evolution - Darwin
One gene one enzyme hypothesis - Beadle and Tatum
Operon concept- Jacob and Monod
Ques:
5
The main factor of evolution is –
Correct Answer:
(D)
Natural selection
According to Darwin's theory of evolution, natural selection is one of the basic Mechanism of evolution.
Ques:
6
Which of the following subjects of data set is associated with the study of concerning population and humanity?
Correct Answer:
(C)
Demography
Ecology - Study of interrelationship between organisms and environment.
Genetics - Study of heredity and variation.
Demography - Statistical study of populations including human beings.
Virology - Study of viruses
Ques:
7
Under Palaeobotany, one studies –
Correct Answer:
(D)
None of these
Palaeobotany is the branch of palaeontology or palaeobiology dealing with the recovery and identification of plant remains from geological contexts and their use for the biological reconstruction of past environments. In India, Prof. Birbal Sahni is known as Father of Indian Palaeobotany
Ques:
8
Rearing silk worms is known as –
Correct Answer:
(C)
Sericulture
Apiculture - Rearing bees
Horticulture - Study of fruit and flower producing plants
Sericulture - Rearing silk worm
Floriculture - Study of flowers for decoration work
Ques:
9
Honey bees are used in :
Correct Answer:
(C)
Apiculture
Honey bees are used in apiculture.
Ques:
10
Which one of the following is not correctly matched?
Cultivation - Nomenclature of Cultivation
Correct Answer:
(C)
Vegetable Cultivation - Horticulture
Horticulture is the branch of plant agriculture dealing with garden crops, generally fruits, vegetables, and ornamental plants.