These stem cells come from<span> embryos that are three to five days old.
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Answer:
Characterstics of larva of silkworm on the basis of body structure is given :
1) The body of larva of silkworm consist of head, thorax and abdomen. The mouth part consist of pair of strong mandibles and a pair of lip.
2) There are three segments of thorax region. Each segment bears a pair of legs. The abdomen part is divided into ten segments. The third, fourth, fifth, sixth and ninth abdominal part produces abdominal appendages called false legs.
Answer:
funaria is a bryophy because of lack of xylem
The cortical reaction. It is initiated during fertilization by the release of cortical granules from the egg, which prevents multiple sperm with one egg.
