11. Which of the following are correctly matched pairs?
- Central Institute of Medicinal and Aromatic Plants – Lucknow
- Centre for DNA Finger Printing and Diagnostics – Hyderabad
- Institute of Microbial Technology – Chandigarh
- National Institute of Immunology – New Delhi
Select the correct option from the codes given below:
[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 4
[D] 1, 2, 3 & 4
Show Answer
Correct Answer: D [1, 2, 3 & 4]
Notes:
The Central Institute of Medicinal and Aromatic Plants (CIMAP) is located in Lucknow, the Centre for DNA Fingerprinting and Diagnostics (CDFD) is situated in Hyderabad, the Institute of Microbial Technology (IMTECH) is based in Chandigarh, and the National Institute of Immunology (NII) is in New Delhi. Each of these pairs is correctly matched with their respective locations. Hence, option [D] is the correct answer as all given pairs are correctly matched.
12. In which organ of the human body are the lymphocyte cells formed?
[A] Liver
[B] Long bone
[C] Pancreas
[D] Spleen
Show Answer
Correct Answer: B [Long bone]
Notes:
Lymphocytes are the cells that determine the specificity of the immune response to infectious microorganisms and other foreign substances. In humans lymphocytes make up 25 to 33% of the total number of leukocytes. They are found in central lymphoid organs and tissues such as the spleen, tonsils and lymph nodes and large bones.
13. Who were the first scientists successfully isolated insulin in 1921?
[A] Frederick Banting and Charles Herbert Best
[B] Robert Hooke and Gregor Mendel
[C] Charles Darwin and Antonie van Leeuwenhoek
[D] Rachel Carson and Theodor Schwann
Show Answer
Correct Answer: A [Frederick Banting and Charles Herbert Best]
Notes:
Insulin was the first peptide hormone discovered. Canadians Frederick Banting and Charles Herbert Best were the first scientists successfully isolated insulin from the dog pancreas in 1921. They achieved this tremendous feat while working in Canada’s University of Toronto J.J.R. Macleod Laboratory.
14. Which of the following branch of biology deals with the study of pollen grains?
[A] Psychology
[B] Palynology
[C] Pathology
[D] Parasitology
Show Answer
Correct Answer: B [Palynology]
Notes:
Palynology is the study of pollen grains produced by seed plants and spores. It represents the land flora and can be used in many different disciplines.
15. Empedocles is related to which of the following theory of biology?
[A] theory of cell
[B] theory of natural selection
[C] theory of mutation
[D] theory of disease
Show Answer
Correct Answer: B [theory of natural selection]
Notes:
Empedocles formulated a theory of natural selection. He proposed that everything in existence is composed of different combinations of four elements: air, fire, water and earth.
16. Which of the following concepts was explained by Stephen Hales?
[A] new species are formed from the sudden and unexpected emergence of alterations in their defining traits.
[B] plant function and behaviour
[C] principles of genetics and inheritance to the improvement of the human race
[D] None of these
Show Answer
Correct Answer: B [plant function and behaviour]
Notes:
Plant physiology is the study of plant function and behaviour. This concepts was explained by Stephen Hales.
17. Which of the following layer of the cell forms the outer covering of all the structures in the plant?
[A] Cork
[B] Epidermis
[C] Sclerenchyma
[D] Collenchyma
Show Answer
Correct Answer: B [Epidermis]
Notes:
The epidermis layer of the cell forms the outer covering of all the structures in the plant.
18. Which plant tissue is the only tissue with the highest refractive index due to the presence of pectin?
[A] Sclerenchyma
[B] Collenchyma
[C] Parenchyma
[D] Laticiferous
Show Answer
Correct Answer: B [Collenchyma]
Notes:
Collenchyma tissue is the only tissue with the highest refractive index due to the presence of pectin.
19. Food is prepared in which part of the plant?
[A] Fruit
[B] Stem
[C] Leaves
[D] Root
Show Answer
Correct Answer: C [Leaves]
Notes:
Food in plants is prepared in leaves, all the essential components and raw materials like water, carbon dioxide, minerals reach to leaves. Leaves are also known as food factories in plants.
20. Flowers having both androecium and gynoecium are called?
[A] Bisexual flowers
[B] Anther
[C] Stamens
[D] Unisexual flowers
Show Answer
Correct Answer: A [Bisexual flowers]
Notes:
Flowers having both androecium and gynoecium are called Bisexual flowers. Flowers are the reproductive part of the plant. They are not only involved in reproduction but are also a source of food for other living organisms.
