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
What does the filiform apparatus do at the entrance into ovule?
  • A
    It brings about opening of the pollen tube.
  • ✓
    It guides pollen tube from a synergid to egg.
  • C
    It helps in the entry of pollen tube into a synergid.
  • D
    It prevents entry of more than one pollen tube into the embryo sac.
✓

Answer

Correct option: B.
It guides pollen tube from a synergid to egg.
b
(b) : Within the embryo sac three cells are grouped together at the micropylar end and constitute the egg apparatus. The egg apparatus, in turn, consists of two synergids and one egg cell. The synergids have special cellular thickenings at the micropylar tip called filiform apparatus, which plays an important role in guiding the pollen tubes into the synergid. Three cells are at the chalazal end and are called the antipodals. The large central cell, has two polar nuclei.

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

A group of cells similar in form, function and origin is called
→
Delete odd one (recent extinction)
→
The number of female nuclei involved in double fertilization is
→
How many statements are correct from given sentences ?
(i) 'Dogs', 'Cats', 'Mammals', 'Wheat' is taxa
(ii) Processes of characterisation, identification, classification and nomenclature are basic to taxonomy
(iii) In early days classification based on evolutionary relationships between organisms
(iv) Linnacus used Systema Naturae as the title of his publication
(v) Systematics include identification, nomenclature and classification on the basis of evolutionary relationships between organisms.
→
Identify the correct sequence of taxonomic categories.
→
The origin of root hairs and lateral roots is
→
Restriction endonucleases
→
Plasmodium, the malarial parasite, belongs to class
→
Which of the following statements regarding $C_{4}$-plants is false?
→
Protected areas are example of
→