11. Which of the following secrete the hormones necessary for the development of the human body? (UPSC Prelims 1983)
[A] Thyroid gland
[B] Pituatory gland
[C] Parathyroid gland
[D] Exocrine gland
Show Answer
Correct Answer: B [Pituatory gland]
Notes:
The pituitary gland is a small pea-sized gland that plays a major role in regulating vital body functions and general wellbeing. Through secretion of its hormones, the pituitary gland controls metabolism, growth, sexual maturation, reproduction, blood pressure and many other vital physical functions and processes.
12. Where does the Fat stored in human body? (UPSC Prelims 1983)
[A] Muscular tissue
[B] Connective tissue
[C] Adipose tissue
[D] Epithelial tissue
Show Answer
Correct Answer: C [Adipose tissue]
Notes:
Adipose tissue is an anatomical term for loose connective tissue composed of adipocytes. Its main role is to store energy in the form of fat, although it also cushions and insulates the body.
13. What is the name of the vessel that delivers the nutrient rich blood from the stomach and small intestine to the liver? (UPSC Prelims 2006)
[A] Left hepatic artery
[B] Hepatic vein
[C] Right hepatic artery
[D] Hepatic portal vein
Show Answer
Correct Answer: D [Hepatic portal vein]
Notes:
The portal vein or hepatic portal vein is a blood vessel that carries blood from the gastrointestinal tract, gallbladder, pancreas and spleen to the liver. This blood contains nutrients and toxins extracted from digested contents.
14. Which gas is released during the process of photosynthesis in plants?
[A] Carbon dioxide
[B] Methane
[C] Oxygen
[D] Nitrogen
Show Answer
Correct Answer: C [Oxygen]
Notes:
Inputs of photosynthesis are carbon dioxide and water and outputs are glucose and oxygen. Photosynthesis occurs in the presence of sunlight.
15. Which branch of biology is known for the scientific study of the distribution of animals on Earth?
[A] Phytogeography
[B] Zoogeography
[C] Psychobiology
[D] Zoophytology
Show Answer
Correct Answer: B [Zoogeography]
Notes:
Zoogeography is the branch of biogeography that deals with the geographical distribution of animal species.
16. Who among the following is considered as the father of modern ecology?
[A] Ramdeo Misra
[B] Parthasarthy Iyengar
[C] Eugene Odum
[D] Theophrastus
Show Answer
Correct Answer: C [Eugene Odum]
Notes:
Eugene Odom is known throughout science as the father of modern ecology.
17. What is the pollination medium in Malacophilous?
[A] bats
[B] water
[C] air
[D] snails
Show Answer
Correct Answer: D [snails]
Notes:
Snails are the pollination medium in Malacophilous. Pollination is the process in which the pollens are transferred from anther to stigma.
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. Stem arises from which of these structures?
[A] internodes
[B] nodes
[C] radicle
[D] plumule
Show Answer
Correct Answer: D [plumule]
Notes:
Stem arises from plumule. The plumule develops into the first true leaf shoots or stems and is also referred to as the future shoots of the plant.
20. Which of these carry water into a leaf?
[A] Leaf blade
[B] Veins
[C] Chlorophyll
[D] Roots
Show Answer
Correct Answer: B [Veins ]
Notes:
Veins carry water into a leaf. The veins in leaves are made up of two major tissues xylem and phloem.
