1. In which organ RBC are selectively destroyed/ recycled by macrophages?
[A] Spleen
[B] Kidney
[C] Liver
[D] Pancreas
Show Answer
Correct Answer: A [Spleen]
Notes:
The spleen, which is located under the ribcage and above the stomach in the left upper quadrant of the abdomen is the largest organ in the lymphatic system. It is that organ where RBC are selectively destroyed/ recycled by macrophages.
2. Which part of the plant Raphanus sativus is edible?
[A] Fruit
[B] Leaves
[C] Roots
[D] All the above
Show Answer
Correct Answer: D [All the above]
Notes:
Raphanus sativus is Radish. The Edible parts are roots, but Radish leaves and seedpods which are fruits are also edible.
3. Consider the following statements:
- Color blindness is more common in men.
- Color blindness is an X-linked recessive trait.
- If both the X chromosomes are defective, a woman may have color blindness.
Which of the above statements are correct?
[A] Only 1
[B] 1, 2 and 3
[C] 2 and 3
[D] Only 1 and 2
Show Answer
Correct Answer: B [1, 2 and 3]
Notes:
Color blindness is more prevalent in men as it is an X-linked recessive disorder. Men, having only one X chromosome, are more susceptible if it is defective. Women, with two X chromosomes, become color blind only if both carry the defective gene. All three statements accurately describe the inheritance and prevalence of color blindness.
4. Who among the following first synthesized “gene” in a laboratory ?
[A] Arthur kornberg
[B] Hargobind Khorana
[C] Gregor Mendel
[D] Watson and crick
Show Answer
Correct Answer: B [Hargobind Khorana]
Notes:
Hargobind Khorana first synthesized “gene” in a laboratory. Hargobind Khorana was an Indian American biochemist who shared the 1968 Nobel Prize for Physiology or Medicine with Marshall W. Nirenberg and Robert W.
5. What does the term “Zoophyte”, in biological context, refer to?
[A] A plant that visually resembles an animal
[B] An animal that visually resembles a plant
[C] A plant that grows on an animal
[D] An animal that grows on a plant
Show Answer
Correct Answer: B [An animal that visually resembles a plant]
Notes:
In biology, Zoophytes are organisms that exhibit characteristics of both animals and plants, although they are animals. They have plant-like appearance and perform photosynthesis, but belong to the animal kingdom. The term is commonly used to describe certain types of marine life, such as sea anemones and corals. These organisms are often static and have similar systems of feeding and growth as certain plant species. Zoophytes display an extraordinary demonstration of nature’s capacity for variation and adaptation.
6. Who among the following is the Father of Mutation theory of evolution?
[A] Alec Jeffery
[B] T.H. Morgan
[C] Bateson
[D] Hugo de Vries
Show Answer
Correct Answer: D [Hugo de Vries]
Notes:
Alec Jeffery is known as the father of Finger Printing Technique. H. Morgan is known as the Father of Experimental Genetics. Bateson is known as the Father of modern Genetics. Hugo de Vries Father of Mutation theory of evolution.
7. Which hormones does pancreas secret?
[A] Testosterone
[B] Progesterone
[C] Prolactin
[D] Glucagon and insulin
Show Answer
Correct Answer: D [Glucagon and insulin]
Notes:
The Islets of Langerhans are the endocrine cells of the pancreas that produce and secrete hormones such as insulin and glucagon into the bloodstream. The pancreatic hormones, insulin and glucagon, work together to maintain the proper level of sugar (glucose) in the blood.
8. Which among the following is also called as ‘power house of the cell’?
[A] Cell wall
[B] Mitochondria
[C] Golgi bodies
[D] Plastids
Show Answer
Correct Answer: B [Mitochondria]
Notes:
Mitochondria is known as the Powerhouse of the Cell as it plays host to one of the most important processes in your body: cellular respiration. Taking in glucose and oxygen, mitochondria produce energy, which they capture and package as energy-rich molecules of ATP.
9. Which one of the following is a fast growing tree?
[A] Teak
[B] Eucalyptus
[C] Banyan
[D] Coconut
Show Answer
Correct Answer: B [Eucalyptus]
Notes:
Eucalyptus is the fast growing tree. Most eucalyptus species have a root depth of 1.5-2.0 metre and its root system is more specifically adapted to using rain-fed soil moisture from the upper soil profile, rather than from the groundwater table at considerable depth. The plant is significant for wood availability, livelihood generation and carbon sequestration that address the challenges of global warming and climate change.
10. What is caused by the deficiency of Vitamin D?
[A] Rickets
[B] Night blindness
[C] Pellagra
[D] Scurvy
Show Answer
Correct Answer: A [Rickets]
Notes:
Rickets is a skeletal disorder that’s caused by a lack of vitamin D, calcium, or phosphate. These nutrients are important for the development of strong, healthy bones. People with rickets may have weak and soft bones, stunted growth, and, in severe cases, skeletal deformities.
