Download App

MODEL PAPER 2025 — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYMODEL PAPER 20251 Mark
MCQ
Signals for parturition in human female originate from
  • A
    Fully developed foetus only
  • B
    Both placenta as well as fully developed foetus
  • C
    Placenta only
  • D
    Oxytocin released from maternal pituitary
✓

Answer

Both placenta as well as fully developed foetus.

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 "M.C.Q [1M]" from MODEL PAPER 2025→MODEL PAPER 2025 — all question types→BIOLOGY STD 12 Science question papers→Bihar Board STD 12 Science question papers→Bihar Board question paper generator→

Similar questions

A pond is a
→
Most studies on human genetics have been made through
→
Organs that have different embryonic origin but perform similar functions are
→
In most mammals, the testes are located in scrotal sac for:
→
If the carbon atoms fixed by producers already have passed through three species, the trophic level of the last species would be:
→
$DNA$ replication is semi-conservative as
→
$A$ : Curd is more nutritious than milk.

$R$ : $LAB$ present in curd checks growth of disease causing microbes.

→
Which one of the following makes use of $RNA$ as a template to synthesize $DNA$
→
The number of base substitution possible in amino acid codons is:
→
Match the following columns

Column $-I$ Column $-II$
$(A)$ Physical barriers $(1)$ Interferon
$(B)$ Physiological barriers $(2)$ Leukocytes
$(C)$ Cellular barriers $(3)$ Tears
$(D)$ Cytokinin barriers $(4)$ skin

$A$    $B$    $C$    $D$

→