Download App

STD 12 - 1. sexual reproduction in flowering plants — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 1. sexual reproduction in flowering plants4 Marks
MCQ
The haploid cell which divides by mitosis to form embryosac is
  • A
    Megaspore mother cell
  • B
    Microspore mother cell
  • ✓
    Functional megaspore
  • D
    Non-functional megaspore
✓

Answer

Correct option: C.
Functional megaspore
c
(c)After meiotic division four haploid megaspores are formed. Only one megaspore (haploid) divides mitotically to form embryo sac and other three become disappear or disintegrated.

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

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

The process of $RNA$ interference $(RNAi)$ has been used in the development of plants resistant to
→
Parthenocarpy is induced by
→
Match List $I$ with List $II$ :

List $I$ (Sub Phases of Prophase $I$) List $II$
$A.$ Diakinesis $I.$ Synaptonemal complex formation
$B.$ Pachytene  $II.$ Completion of terminalisation of chiasmata
$C.$ Zygotene $III.$ Chromosomes look like thin threads
$C.$ Leptotene $IV.$ Appearance of recombination nodules

Choose the correct answer from the options given below

→
Assertion : Vessels are elongated or tube-like cells with thick and lignified walls and tapering ends, dead and are without protoplasm.
Reason: Tracheids are a long cylindrical tube-like structure with lignified walls and a large central cavity, dead and are without protoplasm
→
Secondary productivity is rate of formation ofnew organic matter by
→
The population of an insect species shows an explosive increase in numbers during rainy season followed by its disappearance at the end of the season. What does this show?
→
Specialised parenchyma cells which store tannins, oils and crystals of calcium oxalate are called
→
Which of the following is an example of a defence used by plants against herbivores?

$I.$ Production of caffeine, tannin quinine

$II.$ More production of non-woody tissues

$III.$ Productions of hairs, thorns, spines

$IV.$ Production of hormone-like chemicals that interfere with insect metamorphosis

Select the correct pair

→
Expanded green stem of Opuntia is called
→
Select the plant tissue
a. Xylem
b. Phloem
c. Cuboidal epithelium
d. Cartilage
e. Collenchyma
→