1. Which among the following blood protein regulates the amount of water in plasma?
[A] Globulin
[B] Albumin
[C] Fibrin
[D] Fibulin
Show Answer
Correct Answer: B [Albumin]
Notes:
Albumin is an energy storage protein and also an important osmoregulator of blood.
2. “Rumen” is a part of ____?
[A] Stomach
[B] Small Intestine
[C] Large Intestine
[D] Liver
Show Answer
Correct Answer: A [Stomach]
Notes:
The rumen which is also known as a paunch, forms the larger part of the reticulorumen, which is the first chamber in the alimentary canal of ruminant animals. Hence it is a part of stomach.
3. The edible part of Ginger is actually a ________?
[A] modified root
[B] modified stem
[C] modified leaf
[D] none of the above
Show Answer
Correct Answer: B [modified stem]
Notes:
In Ginger the part that we eat is actually the root which is also called as Rhizome of the plant. A rhizome is a modified stem that grows horizontally underground.
4. Which among the following conditions will give birth to Fraternal Twins?
[A] a single egg is fertilized to form one zygote which then divides into two separate embryos
[B] sperm cells fertilize both the ovum and the second polar body
[C] two eggs are independently fertilized by two different sperm cells
[D] none of the above
Show Answer
Correct Answer: C [two eggs are independently fertilized by two different sperm cells]
Notes:
Fraternal twins are also called as dizygotic twins. In this type of pregnancy two eggs are independently fertilized by two different sperm cells. These types of twins may be of the same or different sexes.
5. The pneumatophores are negatively geotropic roots which grow upward & meant for gaseous exchange. These are a characteristic of _______?
[A] Halophytes
[B] Heliophytes
[C] Sciophytes
[D] Lithophytes
Show Answer
Correct Answer: A [Halophytes]
Notes:
A halophyte is a salt-tolerant plant that grows in soil or waters of high salinity. They consists of pneumatophores which are negatively geotropic roots which grow upward & meant for gaseous exchange.
6. Which among the following is found in a Bacteriophage?
[A] only RNA
[B] only DNA
[C] Both RNA & DNA
[D] Either RNA or DNA
Show Answer
Correct Answer: D [Either RNA or DNA]
Notes:
Either RNA or DNA is found in a Bacteriophage. A bacteriophage which is also informally known as a phage, is a virus that infects and replicates within bacteria and archaea.
7. The hormonal activities of which of the following substances were discovered while studying “foolish seedling” disease in rice?
[A] Cytokinins
[B] Ethylene
[C] Auxins
[D] Gibberellin
Show Answer
Correct Answer: D [Gibberellin]
Notes:
The hormonal activities of Gibberellin were discovered while studying “foolish seedling” disease in rice. Gibberellins (GAs) are plant hormones. They regulate various developmental processes in plants.
8. What do we call the drugs that bind to the receptor site and inhibit its natural function?
[A] agonists
[B] antagonists
[C] antibiotics
[D] None of the above
Show Answer
Correct Answer: B [ antagonists]
Notes:
Drugs that bind to receptor sites and inhibit their natural function are called antagonists. These drugs are useful when a message needs to be blocked.
Antagonists bind to receptors but do not activate them. They compete with available agonists for receptor binding sites. Antagonists block the access or attachment of the body’s natural agonists, usually neurotransmitters, to their receptors. This prevents or reduces cell responses to natural agonists.
Antagonists still cause a response, but this is through blocking the actions of agonists.
Agonist and antagonist drugs can be used together in people with asthma. For example, albuterol can be used with ipratropium.
9. Which of the following is the smallest known prokaryotic organism?
[A] Mycoplasma
[B] Bacteria
[C] Chlorella
[D] Microcystis
Show Answer
Correct Answer: A [Mycoplasma]
Notes:
Mycoplasma genitalium, a parasitic bacterium which lives in the primate bladder, waste disposal organs, genital, and respiratory tracts, is thought to be the smallest known organism capable of independent growth and reproduction.
10. Which organ has finger like outgrowths which are called as villi ?
[A] Bladder
[B] Stomach
[C] Small Intestine
[D] Large Intestine
Show Answer
Correct Answer: C [Small Intestine]
Notes:
The internal walls of the small intestine are covered in finger-like tissue called villi. Each of these villi is covered in even smaller finger-like structures called microvilli. These villi and microvilli increase the surface area available for the absorption of nutrients.
