Answer:
D. Mitochondria. Mitochondira is the powerhouse of the cell, where DNA is stored.
Explanation:
Answer:
The correct answer will be option-A.
Explanation:
During anaphase, the spindle microtubules help the segregation of the chromosomes from the center of the cell at the metaphase plate.
These microtubules get attached to the chromosomes at kinetochore which helps in pulling of the chromosomes to opposite poles. The microtubules pull apart the sister chromatids when cohesin proteins degenerate.
The chromosomes do not show jiggling movement at the metaphase plate and thus, option-A is the correct answer.
A dorsiventral (Lat. dorsum, "the back", venter, "the belly") organ is one that, like an ordinary leaf, has two surfaces that differ in appearance and structure from each other. As a synonym for dorsoventral organs, those reaching from the dorsal to the ventral surface, this term has also been used.