________ is a quiescent form of phytochrome.
1.P630
2.P660
3.P730
4.P760
Posted Date:-2021-09-01 20:33:11
2nd meiotic division in oocyte is completed
1.When ovum is discharged from the ovary
2.When oocyte is fertilized by sperm
3.Just before fertilization
4.Before the onset of menstruation
Posted Date:-2021-09-01 20:33:11
Apomixis is a form of
1.Parthenocarpy
2.Vernalization
3.Parthenogenesis
4.None of these
Posted Date:-2021-09-01 20:33:11
Average loss of blood during birth is about
1.250 cm3
2.350 cm3
3.450 cm3
4.150 cm3
Posted Date:-2021-09-01 20:33:11
Blubber a thick layer of fat is present in
1.Fresh water mammals.
2.Terrestrial mammals.
3.Marine Mammals.
4.Flying mammals.
Posted Date:-2021-09-01 20:33:11
Critical day length for cocklebur is
1.8.5 hrs
2.10-11 hrs
3.13-14 hrs
4.15.5 hrs
Posted Date:-2021-09-01 20:33:11
Developing seeds are rich source of
1.Auxins
2.Gibberellins
3.Cytokinins
4.All of these
Posted Date:-2021-09-01 20:33:11
Development of an egg into zygote without fertilization is called
1.Parthenogenesis
2.Apomixes
3.Parthenocarpy
4.None of these
Posted Date:-2021-09-01 20:33:11
DNA is synthesized and chromosome number is doubled in
1.G1 phase
2.S phase
3.G2 phase
4.G0 phase
Posted Date:-2021-09-01 20:33:11
Duration of menstrual cycle is
1.25 days
2.26 days
3.27 days
4.28 days
Posted Date:-2021-09-01 20:33:11
During birth which of following act as birth canal?
1.Oviduct
2.Uterine tube
3.Uterus
4.Vagina
Posted Date:-2021-09-01 20:33:11
End of menstrual cycle in old age is called
1.Andropause
2.Menopause
3.Gametopause
4.All of these
Posted Date:-2021-09-01 20:33:11
Evolution of pollen tube is parallel to the evolution of
1.Leaf
2.Plant
3.Flower
4.Seed
Posted Date:-2021-09-01 20:33:11
Example of ovoviviparous
1.Reptiles
2.Mammals
3.Duckbill platypus
4.Frog
Posted Date:-2021-09-01 20:33:11
Fertilization of ovum occurs
1.In proximal part of oviduct
2.In distal part of oviduct
3.In uterus
4.In ovary
Posted Date:-2021-09-01 20:33:11
Fetus is human embryo from the beginning of
1.2nd month
2.3rd month
3.4th month
4.5th month
Posted Date:-2021-09-01 20:33:11
Gametes in animals are produced by
1.Mitosis
2.Meiosis
3.Fission
4.Apomixis
Posted Date:-2021-09-01 20:33:11
In asexual reproduction offspring are genetically
1.Identical to the parents
2.Non identical to the parents
3.Identical if mutations do not occur.
4.Both a and c
Posted Date:-2021-09-01 20:33:11
In asexual reproduction offspring are produced by
1.Meiosis
2.Mitosis
3.Both a and b
4.None of these
Posted Date:-2021-09-01 20:33:11
In biennials and perennials, low temperature stimulus is not received by
1.Shoot apex of mature stem
2.Embryo of the seed
3.Leaves of the plants
4.None of the above
Posted Date:-2021-09-01 20:33:11
In case of neurons, post mitotic cell escapes cell cycle and remain in _______ phase whthout proliferating further
1.G0 phase
2.G1 phase
3.G2 phase
4.S phase
Posted Date:-2021-09-01 20:33:11
In cloning, nucleus is introduced into
1.Somatic cell
2.Egg cell
3.Sperm cell
4.None of these
Posted Date:-2021-09-01 20:33:11
In parthenocarpy which levels are high in ovaries
1.Gibberalins
2.Cytokinins
3.Auxins
4.All of these
Posted Date:-2021-09-01 20:33:11
In sexual reproduction, plants have diplohaplontic life cycle with alternating
1.Diploid sporophyte and haploid gametophyte generations
2.Haploid sporophyte and diploid gametophyte generations
3.Diploid sporophyte and diploid gametophyte generations
4.Haploid sporophyte and haploid gametophyte generations
Posted Date:-2021-09-01 20:33:11
In which of the following animals, placenta is formed?
1.Prototherians
2.Metatherians
3.Eutherians
4.None of these
Posted Date:-2021-09-01 20:33:11
In which organism males are haploid
1.Aphids
2.Honey bee
3.Mosquito
4.Butterfly
Posted Date:-2021-09-01 20:33:11
Mitosis occurs in
1.Diploid cells only
2.Haploid cells only
3.Both diploid and haploid cells
4.Monoploid cells
Posted Date:-2021-09-01 20:33:11
Name the type of adaptation from the following that is responsible for shivering thermogenesis
1.Structural
2.Physiological
3.Behavioral
4.None of these
Posted Date:-2021-09-01 20:33:11
Nutrition to egg in ovary is provided by
1.Germ cells
2.Follicle cells
3.Milk cells
4.None of these
Posted Date:-2021-09-01 20:33:11
Panting is a representative of which mechanism
1.Pigmentation
2.Respiration
3.Evaporative cooling.
4.Excretion
Posted Date:-2021-09-01 20:33:11
Period between two consecutive divisions is called
1.Interphase
2.Resting phase
3.Mitotic phase
4.Cell cycle
Posted Date:-2021-09-01 20:33:11
Production of pyrogens is a ________ phenomenon
1.Protective
2.Destructive
3.Constructive
4.Aggressive
Posted Date:-2021-09-01 20:33:11
Progesterone is secreted by
1.Ripening follicles
2.Uterine epithelium
3.Corpus luteum
4.Fertilized egg
Posted Date:-2021-09-01 20:33:11
Resumption of normal growth by a dormant embryo is called
1.Seed dormancy
2.Germination
3.Fruit set
4.Fruit ripening
Posted Date:-2021-09-01 20:33:11
Seeds are dormant in conditions of
1.Water scarcity
2.Low temperature
3.Harsh winters
4.All of these
Posted Date:-2021-09-01 20:33:11
Sertoli cells
1.Provide liquid medium to cells in testes
2.Provide protection and nourishment to cells
3.Secrete testosterone
4.Both a and b
Posted Date:-2021-09-01 20:33:11
The animals in which there are separate male and female individuals are called
1.Unisexual
2.Bisexual
3.Hermaphrodite
4.None of these
Posted Date:-2021-09-01 20:33:11
Thermostat of human body is present in
1.Fore brain.
2.Hind Brain.
3.Thalamus
4.Hypothalamus
Posted Date:-2021-09-01 20:33:11
Total gestation period is about
1.350 days
2.200 days
3.280 days
4.320 days
Posted Date:-2021-09-01 20:33:11
Viviparous animals are those in which
1.Internal fertilization with external development in eggs
2.Internal fertilization with internal development inside female body
3.Internal fertilization and internal development followed by hatching of egg
4.External fertilization with external development
Posted Date:-2021-09-01 20:33:11
What is critical in photoperiodism?
1.Length of light period
2.Length of dark period
3.Both a and b
4.None of these
Posted Date:-2021-09-01 20:33:11
Which characteristic is not of identical twins?
1.Produced by separation of two blastomeres
2.Have different genetic makeup
3.Produced asexually
4.Produced when embryo is at two cell stage
Posted Date:-2021-09-01 20:33:11
Which method is of asexual reproduction?
1.Sporulation
2.Fission
3.Apomixis
4.All of these
Posted Date:-2021-09-01 20:33:11
Which of these cycles operate in human females?
1.Oestrous cycle
2.Menstrual cycle
3.Both of these
4.None of these
Posted Date:-2021-09-01 20:33:11
Which one is not a day neutral plant?
1.Cucumber
2.Maize
3.Cotton
4.Tobacco
Posted Date:-2021-09-01 20:33:11
Which statement is correct?
1.In heteromorphic generations are vegetatively dissimilar
2.In isomorphic generations are vegetatively dissimilar
3.In isomorphic generations are vegetatively similar
4.Both a and c
Posted Date:-2021-09-01 20:33:11
Which statement is incorrect?
1.In short day plants red light prevents flowering
2.Henbane is a short day plant
3.In long day plants for red light promotes flowering
4.Leaf unrolling occurs in grasses
Posted Date:-2021-09-01 20:33:11
Which statement is incorrect?
1.Syphilis is caused by Treponema pallidum
2.Genital herpes produces genital soreness and ulcers
3.Syphilis affects eyes, bones, joints, CNS
4.Gonorrhea is caused by gram negative bacterium
Posted Date:-2021-09-01 20:33:11
Which statement is incorrect?
1.In human, cell cycle is about 24 hrs
2.Mitosis takes 30 min
3.G2 5.5 hrs
4.Yeast cell only 90 min
Posted Date:-2021-09-01 20:33:11
Which statement is incorrect?
1.Climacteric is burst of respiratory activity in fruit ripening
2.It is associated with ethane production
3.It helps in fruit set
4.It helps in fruit ripening
Posted Date:-2021-09-01 20:33:11