A. 2:2
B. 1:3
C. 4:1
D. 3:1
Correct Answer: B. 1:3
At least one of the spores develop into haploid female gametophytes thus making the ratio of functional and degenerate megaspores is 1:3. Out of the four, three megaspores degenrate.
A. Fruit
B. Leaves
C. Roots
D. All the above
Correct Answer: D. All the above
Raphanus sativus is Radish. The Edible parts are roots, but Radish leaves and seedpods which are fruits are also edible.
A. 12
B. 15
C. 20
D. 25
Correct Answer: C. 20
There are as many as 100 thousand kinds of proteins that constitute the body, and these comprise only 20 kinds of amino acids in various combinations.
A Vitamins
B. Antihistamines
C. Antibiotics
D. Antibodies
Correct Answer: C. Antibiotics
The Actinobacteria are a phylum of Gram-positive bacteria. They can be terrestrial or aquatic. It is known to produce a wide variety of industrially and medically relevant compounds like Antibiotics, etc.
A. Shrink and collapse
B. Stick together
C. increase in volume and burst
D. Remains the same
Correct Answer: C. increase in volume and burst
Due to osmosis water would flow into the cells and they would swell.
A. Rice
B. Wheat
C. Maize
D. Pulses
Correct Answer: B. Wheat
Karnal bunt is a fungal disease of wheat, durum wheat, and triticale.
A. Grass
B. Mize
C. Carrot
D. Rice
Correct Answer: A. Grass
A fibrous root system is universal in monocotyledonous plants and ferns. It is the opposite of a taproot system and usually formed by thin, moderately branching roots growing from the stem. The fibrous root system is present in grass.
A. Edwards syndrome
B. Patau syndrome
C. Mongolism
D. None of the above
Correct Answer: C. Mongolism
Down’s syndrome, also known as trisomy 21, is a genetic disorder caused by the presence of all or part of the third copy of chromosome 21. Down’s syndrome is the most common chromosome abnormality in humans.
A. Tapeworm
B. Pinworm
C. Threadworm
D. Ringworm
Correct Answer: B. Pinworm
Enterobius vermicularis which affects the caecum and vermiform appendix is commonly called as Pinworm. Pinworms are tiny, narrow worms, and are white in color and less than a half-inch long.
A. Bacteria
B. Virus
C. Fungi
D. Protozoan
Correct Answer: C. Fungi
Athlete’s Foot or Tinea Pedis is caused by Fungi. It usually begins between the toes. It usually occurs in people whose feet have become very sweaty while being confined within tightfitting shoes.