The movement of Euglena towards the source of light is a?
tropic movement
tactic movement
nastic movement
kinetic movement
Correct answer is B
Taxis (tactic movement): A change in the direction of locomotion in a motile microorganism or cell, made in response to certain types of external stimulus
An adaptation for defense in animals is?
croaking of a male toad
basking in lizard
spines in porcupine fish
huddling together of penguins
Correct answer is C
The porcupine fish has spines on its body. The fish sucks in water and swells up to make the spines stick out. This transforms it from a small mouthful into an uneatable ball of prickly spines. Its flesh also contains a deadly poison as an extra defense.
Evidence of evolution include the following except?
fossil records
comparative anatomy
molecular records
geographical distribution of organisms
Correct answer is D
Some materials present geographical distribution of organisms as an evidence of evolution while some do not.
An animal which is active during the day is known as a
nocturnal animal
diurnal animal
terrestrial animal
homortacmic animal
Correct answer is B
No explanation has been provided for this answer.
Cytokinesis of mitosis is a process that ensures that
each daughter cell gets the necessary organelles
there is distribution of a complete set of genes into each daughter cell
daughter cell inherit new genetic combinations
worn out organelles are excluded from daughter cells
Correct answer is B
No explanation has been provided for this answer.