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3651.

Question :Tubectomy is which type of sterilization method?

Answer»

Small part of fallopian TUBE is removed or TIED.
Ovariesare removed by SURGERY.
A small part of vas DEFERENCE is removed or tied.
UTERUS is removed by surgery.

Answer :A
3652.

Question : Tubectomy, a method of population control, is performed on :

Answer»

Both MALE and FEMALES
Males only
Females only
Only pergnant female

Answer :C
3653.

Question : Tuang baby is:

Answer»

Dryopithecus
Australopithecus
Peking man
Piltdown man

Answer :B
3654.

Question : Tsan synthesized

Answer»

INSULIN of dog
human insulin
cow insulin
sheep insulin

Answer :B
3655.

Question : T.S. of vein

Answer»

SOLUTION :
3656.

Question : T.S. of undehisced anther.

Answer»

SOLUTION :
3657.

Question : T.S. of manmmalian testis revealing seminiferous tubules show different types of cell. Name the two types of cells of germinal epithelium.

Answer»

Solution :(i) Germinal EPITHELIUM have two TYPES of cells. 1. Spermatogonium. 2. Sertoli cells
3658.

Question : T.S. of manmmalian testis revealing seminiferous tubules show different types of cell.Name of cells scattered in connectiv tissue and lying between seminiferous tubules. Differentiate between then on the basis of their functions.

Answer»

SOLUTION :(ii) Leydig.s cell or Interstitial cells.
Functions
Spermatogonium undergoes meiotic division LEADING to sperm FORMATION.
Sertoli cell: Nourishes germ cells
Leydig cell : Synthesise and Secrete hormone androgen.
3659.

Question : T.S. of human artery.

Answer»

SOLUTION :
3660.

Question : T.S. of angiospermic anther.

Answer»

SOLUTION :
3661.

Question : T.S. of a leaf showing Kranz anatomy

Answer»

SOLUTION :
3662.

Question : Tryptophan operon is :

Answer»

REPRESSIBLE system
Inducible system
Controlled by REGULATORY gene
Made up of THREE STRUCTURAL genes

Answer :A
3663.

Question : Trypsin is secreted by:

Answer»

Duodenum
Pancreas
Liver
Stomach

Answer :B
3664.

Question : Trypsin differs from pepsin in that it digest :-

Answer»

PROTEIN in ALKALINE medium in stomach
Protein in acid medium in duodenum
Protein in alkaline medium in duodenum
Protein in acidic medium in stomach

Answer :C
3665.

Question : Try to trace the various components of human evolution (hint: brain size and function, skeletal structure, dietary preference, etc.)

Answer»

Solution :The various components of human evolution are as follows: (a) Brain capacity (b) Posture (c) Food / dietary preference and other important features.
(i) About 15 million years ago, Primates called Dryopithecus and Ramapithecus existed.
They were hairy and walked like gorillas and chimpanzees.
Ramapithecus was more man - like while Dryopithecus was more ape-like.
So, these were the forerunners of hominids.
(ii) Progress was made further when a skull was DISCOVERED about 5 million years ago.
It had a brain size of about 500 cm3 within the RANGE of an ape.s brain but its jaw and teeth were human like.
It was probably not taller than 4 feet but walked upright.
It was named as Australopithecus africanus and lived in the East Africa grasslinds.
Evidence showed that this species hunted with stone weapons but essentially ate fruits.
(iii) From Australopithecus evolved Homohabilis who was characeterised by having a LARGER brain than Australopithecus (650-800 cc), used tools and were bipedal.
They probably did not eat meat.
(iv) Homo erectus appeared about 1.5 million years ago.
Their brain capacity increased to about 800 - 1,200 cc and they migrated to Asia and Europe.
Fossils of Java man and Peking man belong to Homo erectus.
They probably ate meat.
(v) Homo erectus later replaced by Homo sapiens.
They were several SUB - species ofHomo sapiens, a widespread one of which was Homo sapiens neanderthalis, a large brained game hunter.
They have a brain size of 1400 cc and lived in the Near East and Central Asia between 100,000 and 40,000 years ago.
They used hides to protect their body and buried their dead ones.
(vi) The oldest remains of Homo sapiens sapiens appeared about 35,000 years ago, probably have evolved from Neanderthal man.
They were as large brained (1500 cc) as they were today and existed as hunter gatherers in co- operative bands.
They were stout, short and used hides for clothing.
They built huts and buried their dead ones.
(vii) Prehistoric cave art development about 1,800 year ago.
Agriculture came about 10,000 years ago and human settlements started.
3666.

Question : Try to trace the various components of human evolution

Answer»

Solution :The VARIOUS components of human EVOLUTION are as follows.
(i) Brain CAPACITY
(II) Posture iii. Food / dietary preference and other important features

3667.

Question : Try to trace the various components of human evolution (hint : brain size and function, skeletal structure, dietary preference, etc.)

Answer»

Solution : During human evolution, ancestral human types had undergone a NUMBER of remarkable CHANGES in their brain SIZE (cranial cavity), SKELETAL features, dietary preference, etc., as shown in the following table :
3668.

Question : Try to trace the various components of human evolution (hint: brain size and function, skeletal structure, dietary preference, etc.

Answer»

SOLUTION :BROWSE INTERNET
3669.

Question : Try to tracethevariouscomponentsofhumanevolution

Answer»

SOLUTION :(HINT : BRAIN sizeandfunctionskeletalstructuredietary preference.etc )

3670.

Question : True replication of DNA is possible due to :

Answer»

HYDROGEN bonding
Phosphate backbone
Complementary BASE PAIRING rule
None of the above

Answer :C
3671.

Question : True regeneration is served in

Answer»

ROUND Wone
HOOK WORM
Planoria
Rhizopus

ANSWER :C
3672.

Question : True/False Type Question: Ontogeny repeats phylogeny

Answer»


ANSWER :1
3673.

Question : True elaters and gemmae are concerned with:-

Answer»

Riccia
Marchantia
Anthoceros
Notothylus

Answer :B
3674.

Question : True elaters and gemmae are concerned with :

Answer»

RICCIA
Marchantia
Anthoceros
Notothylus

ANSWER :B
3675.

Question : True coelom evolved first in phylum

Answer»

Annelida
Platyhelminthes
Aschelminthes
Arthropoda

Answer :C
3676.

Question : True and False: Zosterophyllum was evolved during Devonian period.

Answer»


ANSWER :F
3677.

Question : True and False Type Questions Strict quality control testing for each product is must.

Answer»


ANSWER :T
3678.

Question : True and False Type Questions Yucca plant get polinated by honey bee.

Answer»


ANSWER :F
3679.

Question : True and False Type Questions Thermolabile DNA polymerase is Taq polymerase.

Answer»


ANSWER :F
3680.

Question : True and False Type Questions Steller's sea cow became extinct from Mauritius.

Answer»


ANSWER :F
3681.

Question : True and False Type Questions Sarguja,Chanda and Bastar are sacred grooves of Meghalaya.

Answer»


ANSWER :F
3682.

Question : True and False Type Questions Retrovirusses in animals have the ability to transform normal cell into caancerous cell.

Answer»


ANSWER :T
3683.

Question : True and False Type Questions Potassium is used for the transformation ofrDNA in bacteria.

Answer»


ANSWER :F
3684.

Question : True and False Type Questions Plasmid DNA act as vector.

Answer»


ANSWER :T
3685.

Question : True and False Type Questions Occurance of more than one embryo in a seed is polyembryony.

Answer»


ANSWER :T
3686.

Question : True and False Type Questions Orbanche and striga nare parasite plants.

Answer»


ANSWER :T
3687.

Question : True and False Type Questions Pacific ocean is the Lungs of the earth.

Answer»


ANSWER :F
3688.

Question : True and False Type Questions pBR322 is a natural cloning vector.

Answer»


ANSWER :F
3689.

Question : True and False Type Questions Orchid fruit has only one large seed.

Answer»


ANSWER :F
3690.

Question : True and False Type Questions Lipase dissolved cell and nuclear membrane.

Answer»


ANSWER :T
3691.

Question : True and False Type Questions India has 25 hotspots.

Answer»


ANSWER :F
3692.

Question : True and False Type Questions Inner wall of the pollen grain is composed of celliulose and pectin.

Answer»


ANSWER :T
3693.

Question : True and False Type Questions India has around 1000 varieties of rice.

Answer»


ANSWER :F
3694.

Question : True and False Type Questions In grass familu the cotyledons are called scutellum.

Answer»


ANSWER :T
3695.

Question : True and False Type Questions Habitat loss is the most important cause of biodiversity extinction.

Answer»


ANSWER :T
3696.

Question : True and False Type Questions Genereative cell divides and form a male gamete.

Answer»


ANSWER :F
3697.

Question : True and False Type Questions Exine get modify into pollen tube.

Answer»


ANSWER :F
3698.

Question : True and False Type Questions Fishes outnumbered all vertebrates.

Answer»


ANSWER :T
3699.

Question : True and False Type Questions Filiform apparatus is developed in antipodal cells.

Answer»


ANSWER :F
3700.

Question : True and False Type Questions Eichhornia is commonly called as carrot grass.

Answer»


ANSWER :F