Biology questions
20584 published questions with worked solutions.
- Which one of the following statements is incorrect about menstruation?
- Onset of menstruation is due to
- Corpus luteum, necessary to maintain endometrium is derived from
- In menstrual phase, the production of LH considerably
- Withdrawl of which hormone cause disintegration of corpus luteum?
- Release of semen by penis into vagina during copulation (coitus) is calledNot in NEET syllabus
- Extrusion of secondary polar body from egg nucleus occurs
- Fusion of dissimilar gametes is known asNot in NEET syllabus
- Second meiotic division in ova takes place
- After fertilization, the vitelline membrane gets separated from the plasma membrane. This is
- The receptor site of an acrosome are exposed and become active to penetrate the egg. This process is called
- What is true about cleavage in fertilized egg of human?
- In human, cleavage/divisions are
- Gastrula is the embryonic stage in which
- Attachment of blastocyst of uterine wall is called
- At the time of implantation, the human embryo is called
- Which of the following hormones is secreted by implanted blastocyst that acts on the corpus luteum in the ovary, stimulating the...
- Sperm's acrosome has
- Female pronucleus is
- Follicle Stimulating Hormone (FSH) derives its name from the fact that it stimulates the growth of ovarian follicle in the...