MCQ test sample of biology for class 12th -CBSE-JAC exams

MCQ test sample of biology for class 12th-CBSE-JAC exams

Hi guys in this article we know about MCQ test sample of biology for class 12th neet exam and Jharkhand Board exam

■lesson-2 sexual reproduction in flowering plants

■subtopics:- double fertilization, pollen grains

■introduction :- students might be busy in your preparation for coming CBSE ,12th board Jharkhand academic Council exams and other state board exam biologysir.com will provide many type of education material like fill in the blanks, true or false matching type questions ,multiple choice questions, very short questions answers type, short questions answer type and long questions type of 12th class Biology from each topic that help you in your preparation.

MCQs test sample-5 in biology for class 12th

*In this post :- we provide you MCQs test sample with answer from the lesson 2 sexual reproduction in flowering plant .biologysir.com

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mcq in biology double fertilization

Q1) when the Pollen tube enters through the micropylar end of ovule for fertilization which following is

A) mesogamy
B) chalazogamy
C) porogamy
D) none

Ans. C

Q2) when the Pollen tube enters through the integument in ovule for fertilization which following is

A) mesogamy
B) chalazogamy
C) porogamy
D) none

Ans. A

Q3) when the Pollen tube enters through the chalaza in ovule for fertilization which following is

A) mesogamy
B) chalazogamy
C) porogamy
D) none

Ans. B

Q4) process of fertilization was discovered by which scientist

A) Nawaschin
B) straburger
C) Aristotle
D) Benda

Ans. B             biologysir.com

Q5) the process of double fertilization was discovered by which scientist

A) Nawaschin
B) straburger
C) Aristotle
D) Benda

Ans. A

MCQ test sample of biology for class 12th-CBSE-JAC exams

■lesson-2 sexual reproduction in flowering plants

■subtopics:- double fertilization, pollen grains

Q6) in double fertilization male gametes fuse with egg cell to form which structure

A) gametes
B) zygote
C) embryo
D) endosperm

Ans. B

Q7) in double fertilization other gamets fuse with secondary nucleus to form which structure

A) gametes
B) zygote
C) embryo
D) endosperm

Ans. D

Q8) nature of endosperm is

A) haploid
B) diploid
C) triploid
D) none

Ans. C           biologysir.com

Q9) nature of zygote is

A) haploid
B) diploid
C) triploid
D) none

Ans. B

Q10) triple fusion is

A) one male gametes +egg cell
B) one male gametes+ secondary nucleus
C) both A and B
D) none

Ans. B

Q11) embryo sac at maturity

A) 8 cell,7 nucleate
B) 8cell,8 nucleate
C) 7 cell,7 nucleate
D) 7 cell,8 nucleate

Ans. D

Q12) embryo sac at maturity contains

A) 6 haploid +1 diploid cell
B) 7 haploid + 1 diploid cell
C) 8 haploid cell +1 diploid cell
D) 6 haploid + 2 diploid cell

Ans. A

Q13) kinds of ovules the embryo sac is horse-shoe shaped

A) hemitropous ovule
B) orthotropous ovule
C) amphitropous ovule
D) circinotropous ovule

Ans. C

Q14) the upright or erect ovule

A)hemitropous ovule
B) orthotropous ovule
C) amphitropous ovule
D) circinotropous ovule

Ans. B

Q15) triple fusion involves fusion of

A) two male gametes and one egg
B) two male gametes and secondary nucleus
C) two eggs and one male gametes
D) one male gametes and two polar nuclei

Ans. D

MCQ test sample of biology for class 12th-CBSE-JAC exams

■lesson-2 sexual reproduction in flowering plants

■subtopics:- double fertilization,

mcq in biology pollen grains

Q16) endosperm of flowering plants develop from

A) haploid nucleus
B) diploid nucleus
C) triploid nucleus
D) tetraploid nucleus

Ans. C

Q17) function of guiding and attracting Pollen tube is done by

A) egg cell
B) filiform apparatus
C) antipodal cell
D) secondary nucleus

Ans. B

Q18) in angiosperm triple fusion produces

A) secondary nucleus
B) polar nucleus
C) primary endosperm nucleus
D) zygotic nucleus

Ans. C           biologysir.com

Q19) xenia and metaxenia are related to

A) xylem and phloem
B) only endosperm
C) Pollen and endosperm
D) Pollen culture

Ans. C

Q20) in flowering plants archesporium give rise to

A) wall of sporangium
B) wall and sporogenous cell
C) tapetum and sporogenous cell
D) wall and tapetum

Ans. B

Q21) largest cell of the ovule is

A) antipodal cell
B) megaspore mother cell
C) Central cell
D) none

Ans. C

Q22) tapetal cells of stamens are

A) tetraploid binucleate
B) diploid uninucleate
C) Hexaploid tetranucleate
D) polyploid multinucleate

Ans. D

Q23) egg appartus contain

A) two polar nuclei
B) antipodal cells
C) synergid cell
D) one egg cell and two synergid cell

Ans. D

Q24) an ovule curved so that nucellus and embryo sac lie right angles to the funicle

A) hemitropous
B) campylotropous
C) anatropous
D) orthotropous

Ans. A            biologysir.com

Q25) total number of nuclei involved in double fertilization is

A) two
B) three
C) four
D) five

Ans. D

MCQ test sample of biology for class 12th-CBSE-JAC exams

■lesson-2 sexual reproduction in flowering plants

■subtopics:- double fertilization, pollen grains

Q26) Pollen tube usually enter the embryo sac

A) through one of the synergid cell
B) directly penetrates the egg
C) by knocking of antipodal cell
D) between 1 synergid cells and Central cell

Ans. A

Q27) larger nucleus in a Pollen Grain is

A) tube nucleus
B) sperm nucleus
C) generative nucleus
D) none

Ans. A

■ you should also visit

1)matching type question sample -1

2) biology class 11th and 12th all full forms

3) MCQs test sample-1 in biology for class 12th-JAC Exams

Q28) male gametes in angiosperms are formed by the division of

A) microspore mother cell
B) microspore
C) generative cell
D) vegetative cell

Ans. C

Q29) synergid cells are

A) haploid
B) diploid
C) triploid
D) none

Ans. A               biologysir.com

Q30) double fertilization involves

A) two male gametes fuse with 2 eggs

B) one male gamete fuse with the egg and the other fuses with the secondary nucleus

C) one male gamete fuses with the eggs and the other fuses with the antipodals cell

D) one male gamete fuses with the antipodals cell and the other fuses with the diploid nucleus

Ans. B

Pollen grain, microsporogenesis

Q31) microsporogenesis is formation of which structure

A) zygote
B) embryo sac
C) pollen grain
D) none

Ans. C

Q34) which of following is microspore

A) pollen grain
B) embryo sac
C) egg cell
D) zygote

Ans. A

Q34) which of following is megaspore

A) pollen grain
B) embryo sac
C) endosperm
D) zygote

Ans. B

Q35) which of following in female gametophyte

A) pollen grain
B) embryo sac
C) endosperm
D) zygote

Ans. B

MCQs test sample-5 in biology for class 12th-CBSE-JAC exams

■lesson-2 sexual reproduction in flowering plants

■subtopics:- double fertilization, pollen grains

Q36) which of the following is male gametophyte

A) pollen grain
B) embryo sac
C) endosperm
D) zygote

Ans. A

Q37) Mega sporogenesis is the process of formation of which structure

A) pollen grain
B) embryo sac
C) endosperm
D) zygote

Ans. B

Q38) Neta of microspore mother cell

A) haploid
B) diploid
C) triploid
D) none

Ans .A

Q39) nature of pollen grain is

A) unicellular
B) multicellular
C) both A and B
D) none

Ans. A             biologysir.com

Q40) size of pollen grain is

A) 30-35 micrometre
B) 25-30 micrometre
C) 35-40 micrometre
D) 10-20 micrometre

Ans. B

Q41) outer layer of pollen grain is called as which of following

A) intine
B) exine
C) germ pore
D) none

Ans. B

Q42) inner layer of pollen grain is called as which of following

A) intine
B) exine
C) germ pore
D) none

Ans. A

Q43) exine of pollen grain is made of which material

A) sporopollenin
B) calcium and magnesium pectate
C) aspartic acid
D) none

Ans. A

Q44) which material in Pollen Grain gives it resistant to to sever environmental condition and remains as fossils material

A) sporopollenin
B) calcium and magnesium pectate
C) aspartic acid
D) none

Ans. A

Q45) germ pore of pollen grain is found in which layer

A) intine
B) exine
C) germ pore
D) none

Ans. B

Q46) the branch of study of pollen grain is called as which of the following

A) pamology
B) floriculture
C) palynology
D) none

Ans. C

Q47) intine of pollen grain is made of which material

A) sporopollenin
B) calcium and magnesium pectate
C) aspartic acid
D) none

Ans. B

Q48) pollinium structure is found in

A) calotropis
B) maize
C) datura
D) papaya

Ans. A

Q49) which type of cell division takes place in the process of microsporogenesis

A) mitosis
B) meiosis
C) plasmogamy
D) none

Ans. B

Q50) Pollen tube of pollen grain emerge from

A) intine
B) exine
C) germ pore
D) none

Ans. C

MCQs test sample-5 in biology for class 12th-CBSE-JAC exams

■lesson-2 sexual reproduction in flowering plants

■subtopics:- double fertilization, pollen grains