Answer:
The correct answer is B.
Explanation:
Given there is a hybrid produced between two species Rana Ridibunda and Rana Lessonae and their offspring can not reproduce, this can mean there is "Postzygotic Isolation" between the said two species. Postzygotic Isolation is defined as "not being able to have fertile offspring" and that is the case in the example. I hope this answer helps.
The answer is graduated cylinder.
Dani requires a graduated cylinder to measure
the volume of the pebbles. A graduated cylinder is actually laboratory
equipment to measure the volume of a liquid. Dani must place a specific amount
of liquid in the cylinder and record the amount. Dani will then put the pebbles
inside the cylinder and subtract the amount of liquid previously recorded to
the current amount to get the volume of the pebbles.
Answer:
Nucleus is the structure present in the cells that directs the cell activities.
Explanation:
Nucleus is responsible for cell division also it has heredity material stored inside it in the form of DNA.
It also plays a very important role in the synthesis of particular enzymes as well.
