please give me answer of this question
Answers
Answer:
Protection , Heat production , Food reserve , Secretion
The main function of nucleolus is to produce and assemble subunits which form the ribosome. Ribosome is the site for protein synthesis. Nucleolus plays an indirect but crucial role in protein synthesis by assembling the ribosome subunits. The nucleolus carries out 50% of the total production of RNA that takes place in cells.
1) attach ovule to placenta
2) hold the flower upright for pollination
3) none of these
4) produce the ovum
Explanation:
Explanation:
1. integuments-The integumentary system protects the body's internal living tissues and organs, protects against invasion by infectious organism, and protects the body from dehydration.
2. nucellus- The nucellus is the largest part of the ovule. It houses the embryo sac as well as nutritive tissue and actually remains present in some flowering plants after fertilization as a source of nutrients for the embyo.
3. funicle- The stalk that attaches an ovule to the placenta in the ovary of a flowering plant. It contains a strand of conducting tissue leading from the placenta into the chalaza.
4. synergid cells- They are two specialized cells that lie adjacent to the egg cell in the female gametophyte of angiosperms and play an essential role in pollen tube guidance and function.
5. antipodal cells- They are present at the chalazal end. Antipodals are nutritive in function; it nourishes the embryo sac. Substances produced by the antipodals helps in the growth and development of the endosperm.