Answer:
Undifferentiated inner cell mass
Explanation:
Human embryo has two types of cells in its initial stage, trophoblast and inner cell mass. Trophoblast forms the placenta and inner cell mass form the entire human body. Inner cell mass are pluripotent in nature i.e. they can give rise to any body part under right conditions.
Embryonic stem cells are derived from the inner cell mass. They are derived from pre implantation embryo since after implantation the inner cell mass begins to differentiate. Embryonic stem cells can replicate indefinitely without differentiating. They can give rise to all the three germ layers: ectoderm, mesoderm and endoderm. They can treat a number of disorders like genetic disorders, Parkinson's, spinal cord injury, cancers etc.
The correct answer is Option D
Reason - Since the two species live in the separate geographical area i.e different ponds they will evolve different traits and characteristics due to geographical diversity Thus any kind of isolation produced with in a species due to change in their spatial entity is called geographic isolation.
Explanation:
Global warming is causing global mean sea level to rise in two ways. First, glaciers and ice sheets worldwide are melting and adding water to the ocean. Second, the volume of the ocean is expanding as the water warms.
A nucleus is the cell's control centre but the cell membrane is what controls what comes in and out depending whether it is selectively permeable or semi permeable; therefore, the answer would be C because it take control and manages everything in the cell
Answer:
The gravitational pull of the moon pulls the seas towards it, causing the ocean tides. Gravity creates stars and planets by pulling together the material from which they are made. Gravity not only pulls on mass but also on light.
Explanation:
