31. The ovary is surrounded by a thin covering of ___.
[A] epithelium
[B] ampulla
[C] isthmus
[D] infundibulum
Show Answer
Correct Answer: A [epithelium]
Notes:
The ovary is surrounded by a thin covering of epithelium, surrounds the ovarian stroma, and is divided into two regions – the outer cortex and the inner medulla.
32. Which of the following species of Plasmodium don’t cause Malaria?
[A] Plasmodium piper
[B] Plasmodium vivax
[C] Plasmodium falciparum
[D] Plasmodium malaria
Show Answer
Correct Answer: A [Plasmodium piper]
Notes:
Plasmodium vivax, falciparum, and malariae species of Plasmodium cause Malaria. Whereas Plasmodium piper species of Plasmodium don’t cause Malaria.
33. Where are the genes for cytoplasmic male sterility in plants located?
[A] Chloroplast genome
[B] Mitochondrial genome
[C] Cytosome
[D] None of these
Show Answer
Correct Answer: B [Mitochondrial genome]
Notes:
The genes for cytoplasmic male sterility in plants are located in the Mitochondrial genome.
34. A nitrogen-fixing bacterium that forms loose associations with the roots of crop plants is __.
[A] Azotobacter
[B] Bacillus polymyxa
[C] Clostridium
[D] Azospirillum
Show Answer
Correct Answer: D [Azospirillum]
Notes:
A nitrogen-fixing bacterium that forms loose associations with the roots of crop plants is Azospirillum.
35. Water of coconut is ____:
[A] Liquid nucellus
[B] Liquid endocarp
[C] Degenerated liquid endosperm
[D] Liquid mesocarp
Show Answer
Correct Answer: C [Degenerated liquid endosperm]
Notes:
Coconut water, the clear liquid inside young green coconuts (fruits of the coconut palm), is liquid endosperm. In early development, it serves as a sus pension for the endosperm of the coconut during their nuclear phase of development. It contains sugars, vitamins, minerals, proteins, free amino acids and growth promoting factors.
36. Which of the following is the smallest bird?
[A] Parrot
[B] Pigeon
[C] Hummingbird
[D] House sparrow
Show Answer
Correct Answer: C [Hummingbird ]
Notes:
Humming birds are birds that comprise the family Trochilidae. They are among the smallest of birds, most species measuring in the 7.5–13 cm (3–5 in) range. Indeed, the smallest extinct bird species is a humming bird, the 5-cm Bee Humming bird. These birds being the smallest are, capable of flying both in forward and back direction.
37. Penicillin is extracted from ____:
[A] Yeast
[B] Lichen
[C] Algae
[D] Fungus
Show Answer
Correct Answer: D [Fungus ]
Notes:
Penicillin the so called ‘Wonder drug’ discovered by Alexander Fleming in 1927 is produced from the genus of fungi “Penicillia”. All penicillin are â-lactam antibiotics and are used in the treatment of bacterial infections caused by susceptible, usually Grampositive organisms.
38. Where does the cabbage store food?
[A] Leaves
[B] Root
[C] Stem
[D] Fruit
Show Answer
Correct Answer: A [Leaves]
Notes:
Cabbages have no need to store food as they are seasonal plants and die after about 4 to 6 months. They do however produce food in the leaves of the plants and would utilize short-term storage (in the leaves) for simple metabolic processes.
39. Which of the following mammals lay eggs?
[A] Bat
[B] Whale
[C] Weasel
[D] Platypus
Show Answer
Correct Answer: D [Platypus]
Notes:
The platypus, also known as the duck-billed platypus, is a semiaquatic egg-laying mammal endemic to eastern Australia, including Tasmania. Together with the four species of echidna, it is one of the five extant species of monotremes, the only mammals that lay eggs instead of giving birth.
40. The tissue in man where no cell division occurs after birth is ____:
[A] Nerves
[B] Skeletal
[C] Connective
[D] Germinal
Show Answer
Correct Answer: A [Nerves]
Notes:
Cell division is the process by which cells produce new cells. In animals some tissues must be repaired often such as the lining of gut, white blood cells, skin cells with a short lifespan. Other cells do not divide at all after birth are neurons.
