If an early blastomere can still develop into a complete embryo, what type of cleavage is this?
Correct answer B. Radial and indeterminate
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Everyday Science MCQs
Page 117 of Everyday Science multiple-choice questions with answers. Tap an option to check yourself.
Page 117 of 198
What are animals whose coelom forms by splitting of the mesoderm called?
Correct answer B. Schizocoelous
Which of the following is NOT a characteristic of triploblastic animals?
Correct answer C. All of them have blood vascular system
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In which phylum are both radial and bilateral symmetry found?
Correct answer B. Echinodermata
Animals of which group show radial symmetry?
Correct answer C. Cnidaria
All of the following are coelomates except which group?
Correct answer C. Aschelminthes
In bacteria, what is the very long, tightly folded DNA molecule that fits inside the cell called?
Correct answer B. Chromatin body
What colour do Gram-positive bacteria appear after Gram staining?
Correct answer B. Purple
Which substance is absent from the cell walls of archaebacteria?
Correct answer D. Peptidoglycan
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Which of these bacteria has no cell wall?
Correct answer C. Mycoplasma
Which structure mainly helps bacteria attach to surfaces?
Correct answer A. Pili
Which structure gives bacteria greater pathogenicity?
Correct answer A. Capsule
From which structure do bacterial flagella arise?
Correct answer B. Basal body
What is a bacterium with a tuft of flagella at both ends called?
Correct answer D. Amphitrichous
Which bacteria usually lack flagella?
Correct answer B. Cocci
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Which structure carries genes for drug and disease resistance in bacteria?
Correct answer A. Plasmid
What is a common waste product of bacteria?
Correct answer A. Lactic acid
Which of these bacteria needs only a low concentration of oxygen?
Correct answer D. Campylobacter
Purple non-sulphur bacteria are an example of which type of bacteria?
Correct answer C. Photosynthetic bacteria
What are bacteria that depend entirely on their host for nutrition called?
Correct answer B. Parasitic bacteria