1
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

In angiosperm, the haploid, diploid and triploid structures of a fertilized embryo sac sequentially are :

A
Antipodals, synergids, and primary endosperm nucleus
B
Synergids, Zygote and Primary endosperm nucleus
C
Synergids, antipodals and Polar nuclei
D
Synergids, Primary endosperm nucleus and zygote
2
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements : One labelled as Assertion A and the other labelled as Reason R :

Assertion A : In gymnosperms the pollen grains are released from the microsporangium and carried by air currents.

Reason R : Air currents carry the pollen grains to the mouth of the archegonia where the male gametes are discharged and pollen tube is not formed.

In the light of the above statements, choose the correct answer from the options given below :

A
Both A and R are true but R is NOT the current explanation of A
B
A is true but R is false
C
A is false but R is true
D
Both A and R are true and R is the correct explanation of A
3
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

The residual persistent part which forms the perisperm in the seeds of beet is

A
Integument
B
Calyx
C
Endosperm
D
Nucellus
4
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

To ensure that only the desired pollens fall on the stigma in artificial hybridization process

(a) the female flower buds of plant producing unisexual flowers need not be bagged.

(b) there is no need to emasculate unisexual flowers of selected female parent

(c) emasculated flowers are to be bagged immediately after cross pollination

(d) emasculated flowers are to be bagged after removal of anthers

(e) bisexual flowers, showing protogyny are never selected for cross

Choose the correct answer from the options given belows

A
(a), (d) and (e) only
B
(a), (b) and (c) only
C
(b), (c) and (d) only
D
(b), (c) and (e) only
NEET Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
CBSE
Class 12