What are the test options?
Answer:
Option A
Explanation:
Option A shows the smallest building block of a living cell.
Answer:
B and E
Explanation:
The correct answer would be that <u>both birds and mammals are vertebrates and are also endothermic.</u>
Both birds and mammals belong to the same animal kingdom. They also belong to the same chordate phylum but belongs to different classes under the phylum. However, they both belong to the same sub-phylum Vertebrata - a group of chordates with the vertebral column.
Birds (aves) and mammals represent different classes of animals. Birds lay eggs that later hatch when conditions are right to give rise to their young ones. Mammals, on the other hand, give birth to their younger ones and are able to produce milk through their mammary gland to feed them. The body of mammals is characterized by the presence of hairs that help insulate the body making them to be homoiothermic, unlike birds that of birds, where hair is replaced with feathers.
However, both birds and mammals are endothermic, that is, they both maintain a fairly constant body temperature irrespective of the temperature of their environment.
The correct options are B and E.
Bacteria are single-celled, prokaryotic
microorganisms. They can be
either "good" or "bad" for the health of plants,
humans, and other animals that come into contact with them. A virus is acellular (has no cell structure) and requires a living host to survive. and causes illness in its host.
Most animal and plant species we see in the fossil record are extinct, or no longer living. In fact, of all the species that ever lived, 98% are extinct. Animals and plants become extinct over time as a result of natural processes. Their habitat might change or a disease might wipe out a species.
