31. Which of the following is not a function of Ethylene?
[A] stimulates the conversion of starch and acids to sugars
[B] promotes germination in some cereals
[C] stimulate shoot elongation, seed germination
[D] fruit ripening, flower wilting, and leaf fall
Show Answer
Correct Answer: C [stimulate shoot elongation, seed germination]
Notes:
The function of Ethylene – stimulates the conversion of starch and acids to sugars, promotes germination in some cereals, and sprouting of bulbs and potatoes and is also associated with fruit ripening, flower wilting, and leaf fall.
32. Which of the following organisms can reproduce through regeneration?
[A] Hydra
[B] Yeast
[C] Plasmodium
[D] Planaria
Show Answer
Correct Answer: A [Hydra]
Notes:
Hydra can reproduce through regeneration and budding. The phylum Cnidaria includes Hydra. They are radially symmetrical and diploblastic.
33. What is the common name of a devilfish?
[A] Loligo
[B] Sepia
[C] Teredo
[D] Octopus
Show Answer
Correct Answer: D [Octopus]
Notes:
Octopus is the common name of a devilfish due to the presence of eight muscular arms or tentacles.
34. What is the class of Mytilus?
[A] Arthropoda
[B] Amphineura
[C] Bivalvia
[D] None of these
Show Answer
Correct Answer: C [Bivalvia]
Notes:
Bivalvia is the class of Mytilus. Mytilus is a cosmopolitan genus of medium to large-sized edible, mainly saltwater mussels.
35. Why is the bladder absent in birds?
[A] Due to disturbs equilibrium of birds
[B] Due to Urine is absent
[C] Due to Solid excretory product
[D] All of them
Show Answer
Correct Answer: D [All of them]
Notes:
The urinary bladder is absent in class Aves which includes birds. They lack a bladder because the waste product is mostly uric acid. They are uricotelic and excrete waste with feces.
36. What are the shape of the malleus and aural bone marrow?
[A] Oval shaped
[B] Hammer shaped
[C] Horseshoe-shaped
[D] None of the above
Show Answer
Correct Answer: B [Hammer shaped]
Notes:
Hammer-shaped is the shape of the malleus and aural bone marrow. In the middle ear between the incus and the eardrum, malleus are found.
37. The human urinary bladder can hold up to ___ml of urine
[A] 400 ml
[B] 600 ml
[C] 800 ml
[D] 1000 ml
Show Answer
Correct Answer: A [400 ml]
Notes:
A healthy human bladder can hold between 400 and 500 milliliters of urine or about 2 cups before reaching capacity.
38. Which of the following female reproductive organs produces female gametes?
[A] Ovaries
[B] Uterus
[C] Fallopian tubes
[D] Vagina
Show Answer
Correct Answer: A [Ovaries]
Notes:
Ovaries are the female reproductive organs that produce female gametes. It is also responsible for producing various hormones.
39. Which organ is affected by Japanese encephalitis?
[A] brain and spinal cord
[B] lungs
[C] liver and pancreas
[D] heart
Show Answer
Correct Answer: A [brain and spinal cord]
Notes:
The Brain and spinal cord organs are affected by Japanese encephalitis. This is a viral infection caused by infected mosquitoes in Asia and the western Pacific.
40. Syphilis is a bacterial infection usually spread by __
[A] Sexual contact
[B] Wound infection
[C] Air-borne droplets
[D] None of these
Show Answer
Correct Answer: A [Sexual contact]
Notes:
Syphilis is a bacterial infection mostly spread by sexual contact. It is caused by Treponema pallidum bacteria.
