Air sacs in most of the birds are
1.6
2.11
3.9
4.12
Air spaces in leaf comprises total volume of
1.40%
2.45%
3.50%
4.55%
All are paired facial bones except
1.maxilla
2.nasal
3.lacrimal
4.mandible
All are the deformities of skeleton caused by nutritional deficiencies except
1.osteomalacia
2.rickets
3.microcephaly
4.none of them
Bony fishes have brain with how many pair of cranial nerves?
1.10
2.11
3.14
4.12
Cohesion tension theory is given by
1.Morgan
2.Dixon
3.Robert
4.Sacks
Colour blindness is
1.x-linked recessive trait
2.y-linked recessive
3.y-linked dominant
4.x-linked dominant
DNA structure was first described by
1.Pasteur
2.Robert Koch
3.Watson and Crick
4.Carlous Linnaues
Female reproductive cycle is completed in
1.27 days
2.28 days
3.26 days
4.29 days
First complete seed appears in
1.cenozoic era
2.jurassic era
3.devonian era
4.carboniferous era
Genetic information is transmitted from DNA to
1.the sites of protein synthesis
2.proteins
3.amino acids
4.digestive enzymes
Haemodialysis means cleaning of
1.urine
2.blood
3.glomerular filterate
4.coelomic fluid
Highly intelligent mammals are
1.rat
2.bat
3.dolphin
4.elephant
In bud condition the upper surface of leaf shows more growth than lower surface in
1.epinasty
2.hyponasty
3.nutation
4.circumnutation
In class crustacea of phylum arthropoda sexes are
1.separate
2.hermaphrodite
3.separate and hermaphrodite both
4.none of them
Kelps belong to which phylum?
1.rhodophyta
2.chlorophyta
3.phaeophyta
4.pyrrophyta
Major cause of chlorosis in plants is shortage of
1.magnesium
2.sulphur
3.nitrogen
4.iron
Most cell membranes are composed principally of
1.DNA ad protein
2.protein and lipids
3.protein and chitin
4.protein and RNA
Most cells lacking a cell wall also lack
1.mitochandria
2.chloroplasts
3.a vacuole
4.a Golgi complex
Movement of cell against concentration gradient is called
1.active transport
2.osmosis
3.diffusion
4.both b and c
Normally, in the process of osmosis, the net flow of water molecules into or out of the cell depends upon differences in the
1.concentration of water molecules inside and outside the cell
2.concentration of enzymes on either side of the cell membrane
3.rate of molecular motion on either side of the cell membrane
4.none of these
One of the following is not a function of bones
1.support
2.production of blood cells
3.protein synthesis
4.muscle attachment
Plants absorb most part of water needed by them through their
1.stem
2.root hairs
3.leaf
4.bark
Pollination is best defined as
1.germination of pollen grains
2.transfer of pollen from anther to stigma
3.formation of pollen grains
4.none of these
Production of sweat and sebum is related with
1.skin
2.liver
3.lungs
4.GIT
Proteins are made from amino acids by the process of
1.hydrolysis
2.pinocytosis
3.dehydration synthesis
4.active transport
Red Blood Cells are produced by the
1.kidneys
2.Lungs
3.Bone Marrow
4.Lymph
Sodium ions are pumped from a region of lower concentration to a region of higher concentration in the nerve cells of humans. This process is an example of
1.diffusion
2.passive transport
3.osmosis
4.active transport
Super blue green algae or expensive pond scum contain __________ protein.
1.55%
2.75%
3.45%
4.60%
The anti-diuretic hormone acts on which part of nephron to cause re-absorption of water?
1.proximal convoluted tubule
2.loop of henle
3.collecting duct
4.distal convoluted tubule
The duration of G-2 phase is
1.10 hrs
2.30 min
3.9 hrs
4.4.5 hrs
The evaporative cooling in the respiratory tract of dogs is called
1.vasodilation
2.vasoconstriction
3.panting
4.all of these
The Hardy-Weinberg principle applies to
1.locomotion
2.population genetics
3.blood transportation
4.the cell theory
The initiation codon is
1.AGU
2.UAA
3.UAG
4.AUG
The lifespan of platelets is _________ days.
1.5
2.6
3.100
4.120
The most abundant element in the Earths atmosphere is
1.Oxygen
2.Nitrogen
3.Hydrogen
4.Carbondioxide
The most common rust fungi species are
1.ustilago
2.puccinia
3.aspergillus
4.penicillium
The number of thoracic vertebrae
1.7
2.12
3.9
4.5
The part of brain which is responsible for long term memory and learning is
1.hippocampus
2.medulla
3.amygdala
4.hypothalamus
The pH concentrations at which maltase is least effective are
1.1 and 7
2.1 and 14
3.7.5 and 14
4.10 and 14
The salt and water balance of the body fluid is maintain by the
1.Kidneys
2.Urinary bladder
3.Lymph
4.Chloroplasts
The small intestine consists of
1.duodenum, jejunum and ileum
2.duodenum, caecum and ileum
3.duodenum, jejunum and rectum
4.caecum, colon and rectum
When a single gene has multiple phenotypic effects the phenomena is called
1.pleiotropy
2.codominance
3.over dominance
4.epistasis
Whic from the following is the correct classification?
1.Kingdom ? Order ? Class ? Family
2.Kingdom ? Phylum ? Class ? Order
3.Kingdom ? Class ? Species ? Family
4.Kingdom ? Class ? Phylum ? Family
Which are the four most abundant elements in living cells?
1.carbon, oxygen, nitrogen, sulfur
2.carbon, oxygen, hydrogen, nitrogen
3.carbon, oxygen, sulfur, phosphorus
4.carbon, sulfur, hydrogen, magnesium
Which from the following is NOT the function of Enzymes?
1.speed up chemical reaction
2.digest food substances
3.involved in cellular respiration
4.maintain healthy epithelial tissues
Which is an organic compound found in most cells?
1.water
2.glucose
3.oxygen
4.sodium chloride
Which of the following is not an endotherm
1.bird
2.mammals
3.amphibian
4.insects
Which of the following is not sex-linked recessive
1.colour blindness
2.haemophilia
3.tfm syndrome
4.hypophosphatemic ricket
Which of the following pathogen type cause disease that can be treated with antibiotics?
1.bacteria
2.fungi
3.virus
4.none of these