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6751.

Question : Which is not true of prokaryotes?

Answer»

They are LIVING cells
They LACK a nucleus
They are EITHER ARCHAEBACTERIA or eubacteria
All are PARASITIC

Solution :All are parasitic
6752.

Question : Which is not true for humus?

Answer»

Dark coloured amorphous SUBSTANCE
Highly RESISTANT to microbial action
Act as RESERVOIR of nutrients and increases water holding capacity of soil
They are degradation product of PROTEINS and fats are produced by the process of mineralisation

Answer :D
6753.

Question : Which is not true about the cell theory?

Answer»

It states that all organisms are composed of cells
It states that all cells COME from pre-existing cells
It states that bacteria and other small organisms canarise spontaneously
It is accepted today by BIOLOGISTS as APPLYING tovirtually all forms of LIFE

Solution :It states that bacteria and other small organisms canarise spontaneously
6754.

Question : Which is not true concerning the Golgi complex?

Answer»

It CONSISTS of a stack of saccules
Molecules are modified WITHIN the lumen of Golgisaccules
LYSOSOMES are VESICLES that BIND to enter the Golgisaccules
Golgi apparatus contains enzymes

Solution :Lysosomes are vesicles that bind to enter the Golgisaccules
6755.

Question : Which is not true about sclereid?

Answer»

These are selerenchyma cells with thickened lignified walls
These are commonly found in the shells of NUTS and in the PULP of pear
These are ELONGATED and flexible with tapered ends
These are CALLED stone cells

Answer :C
6756.

Question : Which is not the function of liver?

Answer»

Production of INSULIN
DETOXIFICATION
Storage of GLYCOGEN
Production of BILE

SOLUTION :N/A
6757.

Question : Which is not related to humus formers?

Answer»

They are darker in colour
They feed on ORGANIC MATTER
They MAKE the soil porous
They are surface dwellers

Solution : They make the soil porous
6758.

Question : Which is not found in gymnosperms?

Answer»

HERBS
SHRUBS
TREES
LIANAS

ANSWER :A
6759.

Question : Which is not correct for sponges ?

Answer»

Internal fertilization
EXTERNAL fertilization
GEMMULE FORMATION
Gametes are formed from ARCHAEOCYTES

ANSWER :B
6760.

Question : Which is not correct

Answer»

Herbarium houses DRIED, PRESSED and preserved plant specimens
Botanical gardens have collection of living plants for REFERENCE
MUSEUM has collection of photographs of plants and animals
KEY is taxonomic aid for identification of specimens

Answer :C
6761.

Question : Which is not corect for sponges?

Answer»

Internal fertilization
External fertilization
Gemmule formation
GAMETES are FORMED from epidermal CELLS.

Solution :External fertilization
6762.

Question : Which is not an accessory pigment?

Answer»

CAROTENE
Xanthophyll
Chlorophyll a
Chlorophyll b

Solution :Chlorophylla is not an ACCESSORY PIGMENT.
6763.

Question : Which is not a unit of taxonomic category?

Answer»

Series
Glumaceae
Class
Phylum

Answer :B
6764.

Question : Which is not a steroid hormone ?

Answer»

ALDOSTERONE
ANDROGEN
ESTROGEN
Thyroxine

Answer :D
6765.

Question : Which is not a pyrimidine base?

Answer»

Cytosine
Uracil
GUANINE
Thymine

Solution :Guanine
6766.

Question : Which is not a primary function of leaf ?

Answer»

Photosynthesis
Transpiration
STORAGE
Gas exchange

Solution :Storage
6767.

Question : Which is not a part of pistil?

Answer»

Style
Stigma
CONNECTIVE TISSUE
carpel

Solution :Connective tissue
6768.

Question : Which is NOT a part of intrastelar ground tissue ?

Answer»

PERICYCLE
MEDULLARY ray
Pith
Cortex

Answer :D
6769.

Question : Which is not a part of five kingdom classification ?

Answer»

VIRUSES
MONERA
PROTISTA
MYCOPLASMA

ANSWER :A
6770.

Question :Which is NOT a natural auxin?

Answer»

IAA
PAA
IPA
NAA

SOLUTION :NAA
6771.

Question : Which is not a monocotyledon character?

Answer»

ONE cotyledon
Parallel venation
PENTAMEROUS
Fibrous ROOT

SOLUTION :Pentamerous
6772.

Question : Which is not a function of stem ?

Answer»

SUPPORT
TRANSPORT of food
Transport of WATER
ABSORPTION of water

Solution :Absorption of water
6773.

Question : Which of the following is not a cryptogam?

Answer»

ALGAE
BRYOPHYTES
PTERIDOPHYTA
ANGIOSPERMAE

ANSWER :D
6774.

Question : Which is not a control measure to reduce particulate matter in environment ?

Answer»

CYCLONIC separators
Scrubbers
Effluent treatment
Electrostatic precipitator

Answer :B
6775.

Question : Which is not a component of bacterial cell ?

Answer»

MESOSOMES
Glycacalyx
POLYSOMES
HISTONES

ANSWER :D
6776.

Question : Which is not a family of gymnospermae?

Answer»

Lycopodia
Cycadopsida
Coniferopsida
Gnetopsida

ANSWER :A
6777.

Question : Which is not a charaeter of root stock ?

Answer»

Nodes
Internodes
Terminal bud
ROOT CAP

Solution :Root cap
6778.

Question : Which is not a characteristic of plants cell wall?

Answer»

FOUND only in the sporophyte PHASE of a LIFE cycle
among other compounds CONTAINS compounds builts of simple sugar
may contain enzyme that are biologically active
often contain strengthening polymer

Answer :A
6779.

Question : Which is not a characteristic of seral stages?

Answer»

Simplified FOOD chain
Few and generalized niches
LOW net COMMUNITY productivity (NCP)
Low energy use efficiency

Answer :C
6780.

Question : Which is not a characteristic of mitochondria?

Answer»

Mitochondria are the SITES of CELLULAR respiration
Mitochondria are FOUND in prokaryotic and eukaryoticcells
Mitochondria contain DNA and ribosomes
Inner space of the mitochondrion contains a FLUID matrix

Solution : Mitochondria are found in prokaryotic and eukaryoticcells
6781.

Question : Which is not a characteristic of chloroplasts?

Answer»

A chloroplast is surrounded by a DOUBLE membrane
Chlorophyll absorbs solar energy that is USED to formchemical bonds
Stacks called GRANA are linked by membranous connections
Chlorophylls are found in the FLUID stroma of thechloroplast

Solution :Chlorophylls are found in the fluid stroma of thechloroplast
6782.

Question : Which is not a character of stem ?

Answer»

EXOGENOUS BRANCHES
DESCENDING PORTION
Nodes
Buds

Solution :Descending portion
6783.

Question : Which is not a character of bryophytes ?

Answer»

Main PLANT BODY is haploid
They POSSES multicellular sex organs
They need WATER for sexual reproduction
They POSSESS well differentiated vascular tissues

Solution :They do not possess well differentiated vascular tissues.
6784.

Question : Which is nota Bryophyte ?

Answer»

Hepaticopsida
ANTHOCEROPSIDA
Bryopsida
LYCOPSIDA

ANSWER :D
6785.

Question : Which is most widely accepted theory to prove Ascent of sap ? Who proposed it.

Answer»

SOLUTION :Cohesion - tension THEORY or TRANSPIRATION pull theory proposed by Dixonand JOLLY (1894-1924).
6786.

Question : Which is not a basic renal function?(a) reabsorption(b) secretion(c) perfusion(d) filtration

Answer»

reabsorption
secretion
perfusion
filtration

6787.

Question : Which is living mechanical tissue?

Answer»

phloem
parenchyma
collenchyma
sclerenchyma

Answer :C
6788.

Question : Which is living mechanical tissue ?

Answer»

Phloem
Parenchyma
Collenchyma
Sclerenchyma

Answer :C
6789.

Question : Which is known as the respiratory rhythm centre?

Answer»

cerebellum
pons varoli
MEDULLA OBLONGATA
infundibulium

Solution :medulla oblongata
6790.

Question : Which is known as liquid connective tissue?

Answer»

PLASMA
BLOOD
SERUM
LYMPH

SOLUTION :blood
6791.

Question : Which is incorrect about coenzyme?

Answer»

Every ENZYME is a cofactor and every cofactor is a conezyme.
Every conenzyme is a cofactor but every cofactor is not a coenzyme
Most of the COENZYMES are NUCLEOTIDES and are COMPOSED of vitamins
Coenzymes are the active constituents of ENZYMES.

Solution :(A) Every coenzyme is a cofactor and every cofactor is not a coenzyme.
Most of the coenzymes are nucleotides and are composed of vitamins.
Coenzymes are the active constituents of enzymes.
6792.

Question : Which is incorrect ?

Answer»

Presence of non-respiratory air SACS increases efficiency OT respiration in birds
In insects, CIRCULATION body fluids serve to distribute oxygen to tissues
Principle of counter - current FLOW facilitates efficient respiration in gills of fishes
Residual air in lungs SLIGHTLY decreases the efficiency of respiration in mammals

Solution :In insects, circulation body fluids serve to distribute oxygen to tissues
6793.

Question : Which is filter feeder

Answer»

Amoeba
Leech
Spider
Paramecium

Answer :D
6794.

Question : Which is false ?

Answer»

Blood from right SIDE of HEART is CARRIED to lungs by pulmonary artery
Pleura is double covering of kidney
Pancreas is both exocrine & ENDOCRINE gland
Scury is due to vitamin C deficiency

Solution :Pleura is double covering of kidne
6795.

Question : Which is essential for the growth of root tip?

Answer»

Zn
Fe
Ca
Mn

Answer :C
6796.

Question : Which is essential for root hair growth?

Answer»

Zn
Ca
Mo
S

Answer :C
6797.

Question : Which is erythropoiesis ? Which hormone stimulate it ?

Answer»

SOLUTION :Formatio of R.B.C. is CALLED erythropoiesis. It is stimulated by reythropoietin hormone SECRETED by JUXTA glomerular CELLS of kidney.
6798.

Question : Which is electron carrier common to both photosynthesis and respiration?

Answer»

cytochrome
phytochrome
phaeophytin
plastocynin

Answer :A
6799.

Question : Which is different?

Answer»

GASTRIN
SECRETIN
PTYALIN
GLUCAGON

SOLUTION :N/A
6800.

Question : Which is determined you parental character ? Describe about the structure.

Answer»

SOLUTION :The parental characters are DETERMINED by the chromosome. The four IMPORTANT features of the chromosome are :
The shape of the chromosonme is specific : The long, thin, lengthy structured chromosome CONTAINS a short, constricted region called centromere.
The number of chromosomes per species is fixed : Example: MOUSE has 40 chromosomes, Onion has 16 and Human have 46,
Chromosomes occur in pairs: Chromosomes of a cell occur in pairs, called homologous pairs. Each of a pair come originally from each parent. Example, human has 46 chromosomes, 23 coming originally from each parent in the process of sexual reproduction.