Download App

Human Reproduction — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Reproduction5 Marks
Question
Mention their source and the function they perform:
hCG, LH, FSH, Relaxin.
✓

Answer

S. No.
Hormone
Source
Function
(i)
FSH
Anterior pituitary lobe.
Stimulates growth of ovarian follicles and maturation of primary oocytes.
(ii)
LH
Anterior pituitary lobe.
Induces ovulation and maintains corpus luteum.
(iii)
hCG
Chorionic cells of placenta.
Maintains the corpus luteum and stimulates it to secrete progesterone.
(iv)
Relaxin
Ovary.
Helps during child birth by relaxing the pelvic muscles as well as muscles of the cervix.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "5 Marks Questions" from Human Reproduction→Human Reproduction — all question types→BIOLOGY STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

  1. Where are B-cells and T-cells produced in the human body? How do they differ from each other? Mention any two differences.
  2. Name any three classes of immunoglobulins in humans. Write one function of each.
→
  1. Name the respective forms in which the malarial parasite gains entry into
  1. Human body and
  2. Body of female Anopheles.
  1. Name the respective hosts and the sites in their body, where the sexual and asexual reproduction of malarial parasite occur.
  2. What is meant by:
  1. Addiction
  2. Dependence with reference to drugs/ alcohol?
→
  1. Why should we conserve biodiversity? How can we do it?
  2. Explain the importance of biodiversity hot-spots and sacred groves.
→
What role does pituitary gonadotropins play during follicular and ovulatory phases of menstrual cycle? Explain the shifts in steroidal secretions.
→
Answer the following questions:
Explain the role of pituitary and the ovarian hormones in menstrual cycle in human females.
→
Explain the process of protein synthesis from processed mRNA.
→
Why should biological control of pests and pathogens be preferred to the conventional use of chemical pesticides? Explain how the following microbes act as biocontrol agents:
  1. Bacillus thuringiensis.
  2. Nucleopoly hedrovirus.
→
Human female is not fertile after menopause whereas males can produce gametes at any age after puberty. Analyse the statement and schematically represent a comparison between gametogenesis in males and females.
→
What is foetal ejection reflex? Explain how it leads to parturition?
→
  1. Work out a cross upto F, generation between two pure-bred pea plants, one bearing violet flowers and the other white flowers.
  2.  
  1. Name this type of cross.
  2. State the different laws of Mendel that can be derived from such a cross.
→