Answer:
d. cells
cardiac tissue are made up of cells.
Answer:
The correct option is C, a clam shell have a good possibility of being preserved because it has a hard body.
Explanation:
In evolutionary studies, preservation are made in the form of fossils or remnants.
For an organism to be preserved, it must not decay early and it should be hard enough. When an organism is buried quickly then it will take more time to decay and hence will have more chances to be preserved.
As the clam shells are hard so this quality makes them ideal enough to be preserved.
Answer:
Option (B).
Explanation:
Chloroplast is the semi autonomous organelle present in the plants. The main function of the chloroplast is to provides the proper environment for the process of photosynthesis.
The grana is present inside the chloroplast. These grana are flattened disk or sac like in shape. They are formed from the thylakoid.
Thus, the correct answer is option (C).
B. Embryos are being collected by the student on the field trip.
