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Science QA ONLINE TEST TEST - 17

54858.The only connective tissue without fibroblasts is
areolar connective tissue
bone
cartilage
blood
54859.During this phase, the nuclear envelope begins to disappear
cytokinesis
S phase
Anaphase
Prometaphase
54860.The undifferentiated primordial germ cells are larger in size and their chromatin rich nuclei are distinct in
growth phase
multiplication phase
maturation phase
all of these
54861.Phenomena that creates female gametes, oogenesis is ceased at prophase I up till puberty. This describes the DNA content of a female’s gametes during her childhood.
23 chromosomes, 23 chromatids
23 chromosomes, 46 chromatids
46 chromosomes, 92 chromatids
46 chromosomes, 46 chromatids
54862.These are brain macrophages
astrocytes
microglial cells
ependymal cells
oligodendrocytes
54863.This is the difference between a nerve and a neuron
consists of different number of cells
one has motor and other has sensory function
nerves are made of grey matter while neurons of white matter
nerves are present in central nervous system only
54864.This is not a function of neuroglia
phagocytosis
isolation of neurons
secretion of cerebrospinal fluid
information processing
54865.In these tissue cells, Lacunae are enclosed
Cartilage
Bone tissue
both (a) and (b)
muscular tissue
54866.This is correct about epithelial tissue
lack of nerve supply
lack of blood supply
lack of free surface
lack of intercellular matrix
54867.Spermatogenesis and oogenesis describe the process of meiosis in males and females, respectively. This statement about both processes is true
both are halted in an intermediate step until puberty
both produce the same number of viable gametes
oogenesis produces a larger gamete than spermatogenesis
oogenesis forms two polar bodies, spermatogenesis forms only one
54868.This phase in the development of sperm has no counterpart in ovum-development
spermiogenesis
phase of multiplication
phase of growth
polar body formation
54869.Mast cells are linked to
neural tissue
areolar connective tissue
endocrine glands
exocrine glands
54870.In humans, the number of ova and sperms that would be produced from 100 secondary oocytes and 100 secondary spermatocytes during gametogenesis is
50 ova, 100 sperms
100 ova, 100 sperms
100 ova, 200 sperms
200 ova, 200 sperms
54871.The amount of yolk and its distribution are changed in the egg. This is affected
ferrilization
cleavage pattern
zygote formation
number of blastomeres
54872.Haemoendothelial placenta takes place in
rat and rabbit
camel and deer
goat and cow
ape and man
54873.Typically, in humans, gametes are disease-free or even in other animals as
gametes are immune to diseases
germs cannot attack gametes
germplasm is segregated easily and not subjected to diseases from which somatic cells may suffer
none of these
54874.This cell is not a type of neuroglia found in CNS
microglia
astrocytes
ependymal cells
Schwann cells
54875.In connective tissue sheaths, this is the correct sequence stretching from the outermost to the innermost layer
epineurium, endoneurium, perineurium
perineurium, epineurium, endoneurium
perineurium, endoneurium, epineurium
epineurium, perineurium, endoneurium
54876.Atretic follicles occur in
Liver
Testis
Thymus
Ovary
54877.Categorization of epithelial tissue is based on this
function
type of matrix
structural modification
non voluntary or voluntary action
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