9. Hemimetabolous development is found in a. Odonata, Thysanura, and Plecoptera.
ID: 206748 • Letter: 9
Question
9. Hemimetabolous development is found in
a. Odonata, Thysanura, and Plecoptera.
b. Plecoptera, Orthoptera, and Ephemeroptera.
c. Orthoptera, Pscocoptera, and Thysanoptera.
d. Two of the above
e. All of the above
10. The dioptric apparatus is composed of
a. the retinular cells, the rhabdom, and the basement membrane.
b. the lens, cone, and the rhabdom.
c. the cone, the rhabdom, and the pigment cells.
d. the pigment cells, the cone, and the lens.
e. None of the above
11. Malpighian tubules function
a. in removing toxins and nitrogenous wastes from the hemolymph.
b. in removing water from excrement.
c. in maintaining chemical homeostasis.
d. Two of the above
e. All of the above
12. Active ventilation
a. occurs only with insects having a closed tracheal system.
b. is commonly found in sedentary insects.
c. is characteristic of insects living in aquatic environments.
d. Two of the above
e. None of the above
Explanation / Answer
Hemimetabolism is an incomplete metamorphosis. There are gradual changes in the insect during this development. No pupal stage is found in this development and the nymph sometimes resembles the adult stage. This stage lack wings and functional reproductive organs.
Incorrect: The group Odonata and Plecoptera have hemimetabolous development but Thysanura has ametabolous development.
Hence, option (a), (d), and (e) are incorrect.
Correct: The orders Plecoptera, Orthoptera, Ephemeroptera and Thysanoptera have hemimetabolous development. Also Pscocoptera has the partial hemimetabolous development.
Hence, the options (b) and (c) are correct.
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