52. Fruits are not formed in gymnosperms because
A. they have no ovary
B. they are not pollinated
C. they are seedless plants
D. process of fertilization doesn't take place
53. A nitrogenous base that occurs in DNA in equal quantities with guanine is
A. adenine
B. cytosine
C. uracil
D. thymine
54. Organisms that convert nitrogen containing organic molecules into nitrates are
A. decomposers (e.g., bacteria)
B. producers (e.g, grasses)
C. primary consumers (e.g., mice)
D. tertiary consumers (e.g., hawk)
55. Which of the following statement is NOT true for viruses?
A. have protoplasm
B. obligate parasites
C. have nucleic acid
D. can respond to stimuli
56. The branch of biology deals with the study of mushrooms is
A. Phycology
B. Mycology
C. Ornithology
D. Myology
57. Pollination involves a transfer of pollen from
Answer (2)
Fruits do not form in gymnosperms due to the absence of an ovary. In DNA structure, cytosine pairs with guanine, and decomposers are vital for converting nitrogen into nitrates. Viruses lack protoplasm, and the study of mushrooms falls under mycology. ;
Fruits do not form in gymnosperms due to the absence of an ovary. In DNA, cytosine pairs with guanine, and decomposers play a vital role in converting nitrogen into nitrates. Viruses do not have protoplasm, and mycology is the study of mushrooms.
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