11. 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.
12. Clove is which part of the plant?
[A] Flower bud
[B] Calyx
[C] Inflorescence
[D] fruit
Show Answer
Correct Answer: A [Flower bud]
Notes:
Cloves are native to the Maluku Islands (or Moluccas) in Indonesia. They are the aromatic flower buds of a tree in the family Myrtaceae, Syzygium aromaticum. They are generally used as a spice.
13. Who is the father of Botany?
[A] Adam Smith
[B] Greco-Roman
[C] Theophrastus
[D] Carl Linnaeur
Show Answer
Correct Answer: C [Theophrastus]
Notes:
Botany is the study of plants. Theophrastus (370-287 B.C.) is known as the father of Botany
14. Amino acids join together to make polypeptides. What polypeptides make by joining together?
[A] Carbohydrates
[B] proteins
[C] vitamins
[D] All the above
Show Answer
Correct Answer: B [proteins]
Notes:
Proteins are made up of chains of amino acids bound by bonds called peptide bond. There are some 22 different known amino acids which can compose proteins. There may be many more unknown to us.
15. A pollen tube is used in the transport of..?
[A] Pollen Grains
[B] Sperm Cells
[C] Eggs
[D] All of them
Show Answer
Correct Answer: B [Sperm Cells]
Notes:
Pollen tube elongation is an integral stage in the plant life cycle. A pollen tube is a tubular structure produced by the male gametophyte of seed plants when it germinates. It is used in the transport of Sperm cells.
16. A ripe Tomato is Red, Leaves are Green, Flower is Purple, Hair is Black. Bring out the pigments responsible for these colors respectively ?
[A] Lycopene, Melanin, Chlorophyll, Anthocyanin
[B] Lycopene, Chlorophyll, Anthocyanin, Melanin
[C] Anthocyanin, Chlorophyll, Lycopene, Melanin
[D] Melanin, Anthocyanin, Chlorophyll, Lycopene
Show Answer
Correct Answer: B [Lycopene, Chlorophyll, Anthocyanin, Melanin]
Notes:
A ripe Tomato is Red, Leaves are Green, Flower is Purple, Hair is Black. The pigments responsible for these colors are Lycopene, Chlorophyll, Anthocyanin, Melanin respectively.
17. Which of the following Vitamin is required for Normal Blood Circulation ?
[A] Vitamin A
[B] Vitamin K
[C] Vitamin D
[D] Vitamin E
Show Answer
Correct Answer: B [Vitamin K]
Notes:
Vitamin K is required for Normal Blood Circulation. Vitamin K is a fat-soluble vitamin which plays a key role in helping the blood clot, preventing excessive bleeding.
18. In which of the following diseases , nerve cells are affected?
[A] Tetanus
[B] Polio
[C] Whooping Cough
[D] Diphtheria
Show Answer
Correct Answer: B [Polio]
Notes:
Nerve cells are affected in Polio. Polio also known as poliomyelitis, is a disabling and life-threatening disease caused by the poliovirus. The virus spreads from person to person and can infect a person’s spinal cord, causing paralysis.
19. 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.
20. Prophase, metaphase, anaphase & telophase are the stages of which of the following process?
[A] Mitosis / Meiosis
[B] Asexual reproduction
[C] sexual reproduction
[D] Cell metabolism
Show Answer
Correct Answer: A [Mitosis / Meiosis]
Notes:
Mitosis is a fundamental process for life. During mitosis, a cell splits to form two identical daughter cells by duplicating all of its contents, including its chromosomes. Prophase, metaphase, anaphase & telophase are the stages of
Mitosis.
