Biology - Reproduction
Exam Duration: 45 Mins Total Questions : 30
Embryo sac is
- (a)
megaspore mother cell
- (b)
megagametophyte
- (c)
megasporangium
- (d)
microsporangium
male gametophyte in angiosperms produces
- (a)
two sperms and a vegetative cell
- (b)
single sperm and a vegetative cell
- (c)
single sperm and two vegetative cells
- (d)
three sperms
even in the absence of pollinating agents seed-setting is assured in
- (a)
commellina
- (b)
zostera
- (c)
salvia
- (d)
fig
Which of the following is a hormone releasing intrauterine device (IUD)?
- (a)
Cervical cap
- (b)
Vault
- (c)
Multiload-375
- (d)
LNG-20
Which one of the following is the most widely accepted method of contraception in India, at present?
- (a)
Cervical caps
- (b)
Tubectomy
- (c)
Diaphragms
- (d)
IUDs (Intra Uterine Devices)
After ovulation, Graafian follicle regresses into
- (a)
corpus luteum
- (b)
corpus callosum
- (c)
corpus albicans
- (d)
corpus artesia
_____________is a life process that is not essential for an individual's survival but for survival of the species.
- (a)
Growth
- (b)
Reproduction
- (c)
Respiration
- (d)
Nutrition
The sperm and the egg make different contributions to zygote. Which of the following statements about their contributions are true?
(i) Sperm contributes most of the mitochondria
(ii) Egg contributes most of the cytoplasm
(iii) Both sperm and egg contribute haploid nucleus
(iv) Both sperm and egg contribute centrioles
- (a)
(i) and (ii)
- (b)
(ii) and (iii)
- (c)
(iii) and (iv)
- (d)
(i), (ii), (iii) and (iv)
Match the column I with column Il
Column I | Column II | ||
(P) | External fertilisation | (i) | Earthworm |
(Q) | Internal fertilisation | (ii) | Cockroach |
(R) | Bisexual | (iii) | Frogs and Fishes |
(S) | Unisexual | (iv) | Birds and mammals |
- (a)
P-(iv), Q-(iii), R-(i), S-(ii)
- (b)
P-(iv), Q-(iii), R-(ii), S-(i)
- (c)
P-(iii), Q-(iv), R-(ii), S-(i)
- (d)
P-(iii), Q-(iv), R-(i), S-(ii)
Which of the following statements are correct?
(i) India's first test tube baby's name is Kum Harsha.
(ii) Inability to conceive or produce children even after 2 years of unprotected sexual cohabitation is called infertility.
(iii) Surgical method of contraception prevents gamete formation.
(iv) MTPs are relatively safe up to 12 weeks of pregnancy.
- (a)
(i), (ii) and (iv)
- (b)
(ii), (iii) and (iv)
- (c)
(iii) and (iv)
- (d)
(i) and (iii)
Which is the most logical sequence with reference to the life cycle of angiosperm
- (a)
Germination, endosperm formation, seed dispersal, double fertilization
- (b)
Cleavage, fertilization, grafting, fruit formation
- (c)
Pollination, fertilization, seed formation & germination
- (d)
Maturation, mitosis, differentiation
Haploid, diploid and triploid conditions respect can be traced in
- (a)
Egg, Nucellus, Endosperm
- (b)
Antipodal, Egg, Endosperm
- (c)
Endosperm, Nucellus, Synergids
- (d)
Antipodal, Synergids & Integration
!he most significantvalue of vegetative propagation is that
- (a)
It enables rapid production of genetic variation
- (b)
It is a means of producing a large population of individuals genetically Identicalto the parent
- (c)
It ensures that the progeny is safe from attack of diseases and pests
- (d)
lt involves reduction division
What is common between vegetative reproduction and Apomixis?
- (a)
Both produces progeny identical to the parent
- (b)
Both are applicable to only dicot plants
- (c)
both occur round the year
- (d)
Both occur round the year
Which one of the following statement is wrong?
- (a)
Pollen grains in some plants remain viable for months
- (b)
Initine is made up of cellulose and pectin
- (c)
When pollen is shed at two - celled state, double fertilization does not take place
- (d)
vegetative cell is larger than generative cell
Which of the following defines the stage of demographic transition?
- (a)
Birth rate is higher than death rate
- (b)
Death rate is higher than birth rate
- (c)
Birth rate and death rate are equal
- (d)
Both (1)&(2)
Spermatogenesis and sperm differentiation are under the control of
- (a)
FSH only
- (b)
LH
- (c)
Testosterone and FSH
- (d)
Parathyroid hormone
In india, marriageable age for boys is ________ and girls is______ respectively.
- (a)
21,18 years
- (b)
15,14 years
- (c)
15,18 years
- (d)
18,21 years
Placenta is
- (a)
Channel for providing essential requirements for growth of embryo
- (b)
Storage organ
- (c)
Conductor for nerve impulse
- (d)
Meant for protection of embryo from shocks
Which of the following parts cannot get affected in a female suffering from chlamydia?
- (a)
Cervix
- (b)
Urethra
- (c)
Uterine tubes
- (d)
Bladder
Which of the following stages of syphilis is characterised by a skin rash, fever and aches in the joints and muscles?
- (a)
Primary stage
- (b)
Secondary stage
- (c)
Tertiary stage
- (d)
Neurosyphilis stage
Which one of the statements is correct regarding sexually transmitted diseases (STD)?
- (a)
The chances of a 5 year boy contacting a STD are very little
- (b)
A person may contact syphilis by milk with one already suffering from the disease
- (c)
Haemophilia is one of the STD
- (d)
Genital herpes and sickle-cell anaemia are both STD
Which of the following weed has become a major cause of pollen allergy in india?
- (a)
Pistia
- (b)
Myosotis
- (c)
Parthenium
- (d)
Mirabilis
In flowering plants, the generative cell of pollen grain divides mitotically to give rise to the
- (a)
2 male gametes
- (b)
3 male gametes
- (c)
1 male gamete
- (d)
4 male gametes
The pollen viability period of rice and pea respectively is
- (a)
30 minutes and several months
- (b)
Several months and 30 minutes
- (c)
Few days and few months
- (d)
Few days in both the cases
The vital link that ensures continuity of species between organisms of one generation and next are all, except
- (a)
Zygospore
- (b)
Oospore
- (c)
Zygote
- (d)
Oospore
Which one of the following pairs is wrongly matched while the remaining three are correct?
- (a)
Bryophyllum - Leaf buds
- (b)
Agave - Bulbils
- (c)
Penicillium - Conidia
- (d)
Water hyacinth - Runner
Vegetative propagation in Pistia occurs by
- (a)
Stolen
- (b)
Offset
- (c)
Runner
- (d)
Sucker
Albuminous seeds store their reserve food mainly in
- (a)
Perisperm
- (b)
Endosperm
- (c)
Cotyledons
- (d)
Hypocotyl
The polyembryony commonly occurs in
- (a)
Tomato
- (b)
Potato
- (c)
Citrus
- (d)
Turmeric