Question: 13
Which of the following comes under the domain eukarya?
A. Plantae
B. Animalia
C. Protista
D. Fungi
E. All of the above
Correct Answer: E. All of the above
Explanation:
Early biologists classified organisms into three major domains namely bacteria, archae and eukarya.
Eukarya is a domain which consists of protists (unicellular or multicellular, colonial, diverse
reproductive cycles) fungi (multicellular or unicellular, chemoheterotrophic, decomposers, unique
reproductive cycles) plantae (photosynthetic autotrophs, multicellular, with cell wall) and animalia
(chemoheterotrophs, without cell wall).
Question: 14
Which of the following is secreted by the pancreas?
A. Elastase
B. Carboxypeptidase
C. Amylase
D. Ribonuclease
E. All of the above
Correct Answer: E. All of the above
Explanation:
Elastase, carboxypeptidase, ribonuclease and amylase are secreted by the pancreas. Elastase
breaks down elastin. Carboxypeptidase cleaves peptide bond at the carboxyl terminal. Ribonuclease
cleaves RNA molecules.
Question: 15
Nematocyst is a characteristic feature of
A. Echinoderms
B. Arthropods
C. Molluscs
D. Cnidarians
E. Porifera
Correct Answer: D. Cnidarians
Explanation:
Nematocysts are sub-cellular organelle found in cnidocytes. They carry toxic substances.
Nematocysts are powerful weapons and a single nematocyst is sufficient to paralyse smaller
organisms. The box jellyfish has one of the most toxic nematocysts.