1. The Chlorophyll cells within the plant leaves are perfectly optimized to absorb which of the following waves of the Sun Light?
[A] Green
[B] Red & Blue
[C] Red & Yellow
[D] Yellow and Blue
Show Answer
Correct Answer: B [Red & Blue]
Notes:
The Chlorophyll cells within the plant leaves are perfectly optimized to absorb red and blue waves of the Sun Light. Chlorophyll is concentrated within organisms in structures called chloroplasts.
2. Apart from sugarcane (most commonly Saccharum officinarum) which among the following plants is widely known in the world as a commercial source of table sugar ?
[A] Toona cilata
[B] Gloriosa superba
[C] Asparagus pulmosus
[D] Beta vulgaris
Show Answer
Correct Answer: D [Beta vulgaris]
Notes:
Beta vulgaris is beet or sugarbeet or Chukandar and has been widely used as a commercial crop for table sugar. Glorisoa superba is Glory Lily which is an ornamental plant. Asparagus pulmosus is also an ornamental plant. Brassica alba is common mustard. Toona cilata is a timber plant from which Indian Redwood is obtained.
3. Which among the following indicates Vitamin B12?
[A] Niacin
[B] Pyridoxine
[C] Cobalamine
[D] Thiamine
Show Answer
Correct Answer: C [Cobalamine]
Notes:
Cobalamine indicates Vitamin B12. It is a water-soluble vitamin and plays an essential role in the production of your red blood cells and DNA, as well as the proper functioning of our nervous system.
4. Which among the following is correct definition of Bacteriophage?
[A] A Bacteria that destroys Virus
[B] A Virus that destroys Bacteria
[C] A Bacteria that destroys another bacteria
[D] A Bacteria that destroys Fungi
Show Answer
Correct Answer: B [A Virus that destroys Bacteria]
Notes:
Bacteriophage a virus that parasitizes a bacterium by infecting it and reproducing inside it. Bacteriophages are commonly used in genetic research. They are composed of proteins that encapsulate a DNA or RNA genome, and may have structures that are either simple or elaborate.
5. What do we call the roots of some orchid plants, which hang in the air and absorb moisture from it?
[A] Assimilatory Roots
[B] Epiphytic Roots
[C] Sucking Roots
[D] Stilt Roots
Show Answer
Correct Answer: B [ Epiphytic Roots]
Notes:
Epiphytic roots are the roots of some orchid plants, which hang in the air and absorb moisture and nutrients from the air, rain water. Examples of epiphytic roots are mosses, liverworts, lichens, and algae of temperate zone and ferns, cacti, orchids, and bromeliads in the tropics.
6. From the point of view of evolution of living organisms, which of the following set of animals is a correct sequence of evolution?
[A] Whale, Kangaroo, Echidna
[B] Echidna, Whale, Kangaroo
[C] Kangaroo, Whale, Echidna
[D] Echidna, Kangaroo, Whale
Show Answer
Correct Answer: D [ Echidna, Kangaroo, Whale]
Notes:
The correct sequence of the evolution would be Monotremes, Marsupials and Eutheria. Since, Whale is in subclass Eutheria, it is the latest in the evolution. So the correct sequence is Echidena (Monotreme), Kangaroo (Marsupials) & Whale (Eutheria).Echidna are the only surviving members of the Monotremata order and are the only living mammals that lay eggs.
7. The study of Improvement of human race by improving environment is known as ?
[A] Euthenics
[B] Eugenics
[C] Euphenics
[D] Etiology
Show Answer
Correct Answer: A [Euthenics]
Notes:
Euthenics is the branch of biology that studies the improvement of human race by improving environment. Eugenics is the branch of biology that studies the Improvement of human race through laws of heredity. Euphenics is the branch of biology that studies the improvement of human race by drug treatment or genetic engineering. Etiology is the branch of biology that studies the Life cycle of causal organisms of the disease.
8. Which plants grow well only in light?
[A] Heliophytes
[B] Xerophytes
[C] Sciophilous
[D] Epiphytes
Show Answer
Correct Answer: A [Heliophytes]
Notes:
Sunstroke plants or heliophytes are adapted to a habitat with a very intensive insolation, because of the construction of its own structure and maintenance. Heliophytes, for example, are mullein, ling, thyme and soft velcro, white clover, and most roses.
9. The young chicks come out of eggs within how many days after being hatched by the hen?
[A] One week
[B] Two weeks
[C] Three weeks
[D] Four weeks
Show Answer
Correct Answer: C [Three weeks]
Notes:
A hen that is committed to hatching chicks is known as a broody. The state of being broody is controlled by instinct, hormones and lighting conditions. Chicken come out of the eggs within the 21 days after being hatched by the hen. Some breeds take a little less and some a little longer. If the egg has not hatched after 25 days, it should be removed from the broody hen or incubator. Eggs need constant heat during the full incubation period for the embryo to develop into a chick.
10. Consider the following statements:
I. Meningococcal Meningitis is transmitted from person to person by mosquito bites.
II. Vomitting and neck pain are two of the symptoms of Meningococcal Meningitis.
Which of the statements given above is/are correct?
[A] I only
[B] II only
[C] Both I and II
[D] Neither I nor II
Show Answer
Correct Answer: B [II only]
Notes:
This virus is spread by mosquito bites and has become an important cause of viral meningitis in most of the United States.
Bacterial meningitis symptoms may develop within hoursor days. Fever, severe headache, and neck stiffness are the hallmark symptoms of meningitis. Others include: Nausea and vomiting.
