Answer:
A) B cells produce plasma cells, which secrete antibodies into the blood
Explanation:
There are two types of lymphocytes present in blood. These are namely, B lymphocytes and T lymphocytes. The B lymphocytes are activated with help of T lymphocytes. The activated B cells divide and produce a large number of cells that differentiate into the plasma cells. These plasma cells finally produce antibodies against specific antigens.
Answer:
False
Explanation:
Prophase is the first phase of mitosis, the chromosomes are visible in this stage. The chromosomes are distinct but they are not shortened.
Abrasion generally occurs four ways. Glaciation slowly grinds rocks picked up by ice against rock surfaces. Solid objects transported in river channels make abrasive surface contact with the bed and walls. Objects transported in waves breaking on coastlines cause abrasion. I HOPE THIS HELPED:)
The correct is option (C) includes bacterial genes that produce a toxin that reduces damage from insect pests.
Due to advancements in plant biology, some plant species can now incorporate unique traits that are typically not found in their species. New and improved plant strains can be created using plant biotechnology. This technology is heavily utilized to advance agriculture.
A particular crystalline insecticidal protein is created by combining a specific gene sequence from the bacteria Bacillus thuringiensis with plants. Bt plant is a common name for these transgenic plants. One such transgenic plant that protects transgenic maize from damaging insects and pests is bt maize.
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Answer:
This is an example of founder effect.
Explanation:
Founder effect may be illustrated as the loss of genetic variation in a novel small population originated from the original population. The concept was initially presented by Ernst Mayr. It can be seen that genetic diversity has got reduced in the population of iguana due to the result of the flood that has washed all the iguana without webbed feet into the sea.
The new population has got inclined from the small iguana population. Thus, the iguana population is regarded as an illustration of the founder effect.
