1. Change in genetic composition of a population is called as?
[A] extinction
[B] evolution
[C] endemic
[D] vicariance
Show Answer
Correct Answer: B [evolution]
Notes:
Evolution is change in the heritable characteristics of biological populations over successive generations. The theory of evolution is based on the idea that all species are related and gradually change over time.
2. Deficiency of Tocopherol leads to sterility in males and females. The popular word for Tocopherol is ___?
[A] Vitamin B3
[B] Vitamin K
[C] Vitamin D
[D] Vitamin E
Show Answer
Correct Answer: D [Vitamin E]
Notes:
Tocopherols are a class of organic chemical compounds, many of which have vitamin E activity. Deficiency of Tocopherol leads to sterility in males and females. Tocopherol exists in four different forms designated as α, β, δ, and γ.
3. Islets of langerhans are related to which of the following?
[A] Calcitonin
[B] Insulin
[C] Thyroxine
[D] None of the above
Show Answer
Correct Answer: B [Insulin]
Notes:
The pancreatic islets or islets of Langerhans are the regions of the pancreas that contain its endocrine which is also called as hormone-producing cells. They are also known as the insulin-producing tissue.
4. The natural Pacemaker in the Human Heart is located in the SA node which is present in which among the following chambers?
[A] Right Auricle
[B] Left Auricle
[C] Right Ventricle
[D] Left Ventricle
Show Answer
Correct Answer: A [Right Auricle]
Notes:
The natural Pacemaker in the Human Heart is located in the SA node which is present in right auricle chamber. It’s a small mass of specialized cells located in the top of the right atrium i.e., the upper chamber of the heart.
5. Chickpeas when soaked in water can swell up to three times their volume. The phenomenon involved in this is called _?
[A] Imbibition
[B] Osmosis
[C] Reverse Osmosis
[D] Diffusion
Show Answer
Correct Answer: A [ Imbibition]
Notes:
The movement of water through semipermeable membrane from region of higher concentration to region of lower concentration is called Osmosis. The uptake or absorbtion of water by solid substance without forming solution is called Imbibition.
6. Which of the following two vegetables are in same Genus Solanum?
[A] Potato and Brinjal
[B] Potato and Cauliflower
[C] Brinjal and Chilli
[D] Tomato and Radish
Show Answer
Correct Answer: A [Potato and Brinjal]
Notes:
Potato and Brinjal have several common features and are thus included in the same genus Solanum. The scientific name of Potato is Solanum tuberosum and Brinjal is Solanum melongena.
7. Which among the following blood vessels has the smallest diameter?
[A] Arterioles
[B] Capillaries
[C] Venules
[D] Lymphatic
Show Answer
Correct Answer: B [Capillaries]
Notes:
Blood is carried through the body by Blood Vessels. With the help of perfusion process capillaries supplies blood to the tissues. The diameter of capillary ranges from 5-10 micrometers. The diameter of arteriole is approximately 30 micrometer.
8. Which part of the plant is used in making saffron spice?
[A] Stigma
[B] Sepal
[C] Petal
[D] Leaf
Show Answer
Correct Answer: A [Stigma]
Notes:
Stigma of the plant is used in making the saffron spices. In making the saffron spice, stigma of the plant is used. Stigma is the top of the centre part of a flower. It receives the pollen that allows it to form new seeds.
9. Snakes, turtle, lizards and crocodiles falls under which category of animals?
[A] Amphibian
[B] Pisces
[C] Reptiles
[D] Aves
Show Answer
Correct Answer: C [Reptiles]
Notes:
Reptiles are tetrapod animals in the class Reptilia, comprising today’s turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives. The study of these traditional reptile orders, historically combined with that of modern amphibians, is called herpetology
10. Which part of the plant gives us saffron?
[A] Petals
[B] Stigma
[C] Roots
[D] Stem
Show Answer
Correct Answer: B [Stigma]
Notes:
The dried stigmas (thread-like parts of the flower) are used to make saffron spice. It can take 75,000 saffron blossoms to produce a single pound of saffron spice. Saffron is largely cultivated and harvested by hand.
