Biology Botany Online Mock Test Medical exam,NEET UG,AIIMS,JIPMER

NEET UG Botany MCQ-67

Question No:1

Given below are a few statements related to external fertilization. Choose the correct statements.
(i) The male and female gametes are formed and released simultaneously
(ii) Only a few gametes are released into the medium
(iii) Water is the medium in a majority of organisms exhibiting external fertilization
(iv) Offspring formed as a result of external Fertilization have better chance of survival than those formed inside an organism

(A) iii and iv
(B) i and iii
(C) ii and iv
(D) i and iv

Question No:2

The statements given below describe certain features that are observed in the pistil of flowers.

(i) Pistil may have many Carpels
(ii) Each carpel may have more than one ovule
(iii) Each carpel has only one ovule
(iv) Pistil have only one carpel

Choose the statements that are true from the options below:

(A) i and ii
(B) i and iii
(C) ii and iv
(D) iii and iv

Question No:3

Which of the following situations correctly describe the similarity between an angiosperm egg and a human egg?
(i) Eggs of both are formed only once in a Lifetime
(ii) Both the angiosperm egg and human egg are stationary
(iii) Both the angiosperm egg and human egg are motile transported
(iv) Syngamy in both results in the formation of zygote

Choose the correct answer from the options given below

(A) ii and iv
(B) iv only
(C) iii and iv
(D) i and iv

Question No:4

Appearance of vegetative propagules from the nodes of plants such as sugarcane and ginger is mainly because

(A) Nodes are shorter than internodes
(B) Nodes have meristematic cells
(C) Nodes are located near the soil
(D) Nodes have non-photosynthetic cells

Question No:5

Which of the following statements, support the view that elaborate sexual reproductive process appeared much later in the organic evolution,
(i) Lower groups of organisms have simpler body design
(ii) Asexual reproduction is common in lower groups
(iii) Asexual reproduction is common in higher groups of organisms
(iv)The high incidence of sexual reproduction in angiosperms and vertebrates

Choose the correct answer from the options given below

(A) i and iii
(B) i and iii
(C) ii and iv
(D) ii and iii

Question No:6

Offspring formed by sexual reproduction exhibit more variations than those formed by asexual reproduction because

(A) Sexual reproduction is a lengthy process
(B) Gametes of parents have qualitatively different genetic composition
(C) Genetic material comes from parents of two different species
(D) Greater amount of DNA is involved in sexual reproduction

Question No:7

Choose the correct statement from amongst the following

(A) Dioecious organisms are seen only in animals
(B) Dioecious organisms are seen only in plants
(C) Dioecious organisms are seen in both plants and animals
(D) Dioecious organisms are seen only in vertebrates

Question No:8

There is no natural death in single celled organisms like Amoeba and bacteria because

(A) They cannot reproduce sexually
(B) They reproduce by binary fission
(C) Parental body is distributed among the offspring
(D) They are microscopic

Question No:9

There are various types of reproduction. The type of reproduction adopted by an organism depends on

(A) The habitat and morphology of the organism
(B) Morphology of the organism
(C) Morphology and physiology of the organism
(D) The organism’s habitat, physiology and genetic makeup

Question No:10

Identify the incorrect statement.

(A) In asexual reproduction, the offspring produced are morphologically and genetically identical to the parent
(B) Zoospores are sexual reproductive structures
(C) In asexual reproduction, a single parent produces offspring with or without the formation of gametes
(D) Conidia are asexual structures in Penicillium

Question No:11

Which of the following is a post-fertilization event in flowering plants?

(A) Transfer of pollen grains
(B) Embryo development
(C) Formation of flower
(D) Formation of pollen grains

Question No:12

The number of chromosomes in the shoot tip cells of a maize plant is The,, number of chromo-somes in the microspore mother cells of the same plant shall be:

(A) 20
(B) 10
(C) 40
(D) 15

Question No:13

The fertilized egg is called ____

(A) ovum
(B) blastocyst
(C) diploid cell
(D) zygote

Question No:14

The process by which the sperms are produced is known as

(A) ovulation
(B) spermatogenesis
(C) oogenesis
(D) gestation

Question No:15

Binary fission is seen in ____

(A) Plasmodium
(B) Hydra
(C) Amoeba
(D) Mucor

Question No:16

The endosperm nucleus in angiosperms is

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

Question No:17

55) Pollen tube contains————–

(A) one male nucleus
(B) two male nuclei
(C) three male nuclei
(D) four male nuclei

Question No:18

If the pollen is transferred to the stigma of the same flower, it is called ____ .

(A) allogamy
(B) autogamy
(C) cross pollination
(D) double fertilization

Question No:19

Pollen grains are produced by _____ .

(A) ovary
(B) filament
(C) stigma
(D) anther

Question No:20

The collective name for sepals is ____

(A) androecium
(B) gynoecium
(C) corolla
(D) calyx