How many sphincters are in the human body?

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

Apuppy’s tendency to chew is inherited through which of the following? a. through learned behavior b.through genes c. through seasonal cycles d. through hibernation

Which of the following cognitive skills have not been displayed by animals? a. using tools b. forming concepts c. transmitting culture d. using syntax