A seed may be defined as a fertilized
1.egg
2.ovary
3.ovule
4.embryo
After pollination the pollens are transferred to which part of the flower
1.ovary
2.style
3.stigma
4.none of these
Algae differ from plants in that the sex organs in algae are
1.multicellular
2.unicellular
3.acellular
4.none of these
All life on planet earth is powered by
1.solar energy
2.thermal energy
3.tidal energy
4.kinetic energy
An isolated virus is not considered living since it
1.separate into two parts
2.cannot metabolize
3.rapidly looses its genome
4.all of these
Bacteria without any flagella are called
1.monotrichous
2.atrichous
3.peritrichous
4.lophotrichous
Bryophytes are
1.all heterosporous
2.all homosporous
3.mostly homosporus
4.none of these
Cassia fistula is the scientific name of
1.amaltas
2.rose
3.onion
4.tomato
Cell envelope does not include
1.capsule
2.slime layer
3.cell wall
4.cell membrane
Coenocytes is a fungal body which is
1.multi-nucleate aseptate
2.multi-nucleate septate
3.uni-nucleate septate
4.uni-nucleate aseptate
Common feature of human and insect trachea is
1.non-collapsiable wall
2.supporting rings
3.ectodermal origin
4.endodermal origin
Deafness is caused by misuse of
1.penicillin
2.tetracycline
3.paracetamol
4.streptomycin
Environment is a source of
1.food
2.shelter
3.clothing
4.all of these
Foul smell in lake is produced by
1.algae
2.bacteria
3.fungi
4.all of these
Fresh water ecosystem covers
1.2%
2.1%
3.3%
4.5%
Fungi can absorb food from the substrate because the have
1.sporangium
2.spores
3.rhizoids
4.stalk
Glyoxisomes contain enzymes for
1.glyoxylate cycle
2.glycolate cycle
3.Calvin cycle
4.none of these
In bacterial and viral infection, their is increase in number of
1.platelets
2.RBCs
3.antibodies
4.WBCs
In birds the sex is determined by the type of
1.sperm
2.autosomes
3.egg
4.none of these
In cystic fibrosis, the patient lacks a gene that codes for trans-membarene carrier of
1.sodium ion
2.carbon dioxide
3.chloride ion
4.potassium ion
In plants, which are involved in testa formation
1.tracheids
2.sclereids
3.sclerenchyma
4.none of these
In RNA nucleotides are attached by
1.peptide bonds
2.hydrogen bonds
3.covalent bond
4.phosphodiester bond
In which plants leaves are always in whorls
1.lycopsids
2.psilopsids
3.sphenopsids
4.pteropsids
Irregular grape like cluster of bacilli is called
1.diplo bacilli
2.strepto bacilli
3.staphylo bacilli
4.none of these
It is generally accepted that plants arose from ancestral
1.green algae
2.fungi
3.bacteria
4.all of these
Main energy reserves in the case of green algae are
1.glycogen
2.sucrose
3.glucose
4.starch
Nephridia are excretory organs in
1.round worms
2.lizard
3.earth worm
4.planaria
Phage virus consists of head and
1.thorax
2.neck
3.tail
4.none of these
Photosynthetic prokaryotes lack
1.ribosomes
2.chloroplast
3.cell-membrane
4.vacuole
Plants having foreign DNA are known as
1.genetic plants
2.recombinant plants
3.cultured plants
4.transgenic plants
Platyhelminthes means
1.round worms
2.flat worms
3.tape worms
4.pin worms
Protists have been evolved from
1.animals
2.plants
3.fungi
4.prokaryotes
Recombinant DNA is introduced in to host cell by means of
1.phage
2.vector
3.bacteria
4.enzyme
Single membrane bounded organelle is
1.nucleus
2.lysosome
3.ribosome
4.none of these
Starch is richly present in
1.onion
2.apple
3.cereals
4.tomato
The basic framework of all types of membranes are
1.lipoproteins
2.glycoproteins
3.proteoglycans
4.nucleoproteins
The chief component of the cell wall of the majority of fungi is
1.pectin
2.chitin
3.lignin
4.cellulose
The chromosome is
1.gene
2.genes + protein
3.DNA + genes
4.gene + protein
The etiolated plants lack
1.chlorophyll
2.xanthophyll
3.caroteins
4.none of these
The first land vertebrates were
1.dipnoi
2.amphibia
3.reptilia
4.aves
The human body contains water
1.60-80%
2.70-90%
3.75-95%
4.80-90%
The predominant phycobilin pigment in cyanobacteria which is of blue colour is
1.phycoerythrin
2.phycocyanin
3.fucocyanin
4.fucoxanthin
The scientific name of jelly fish is
1.Aurelia
2.Madrepore
3.Actinia
4.Obelia
Vacuoles serve to
1.expand the plant cells
2.sites for storage
3.both in expansion and storage
4.non-specific function
Vomiting occurs due to
1.constipation
2.diarrhoea
3.antiperistalsis
4.peristalsis
Which gene is located on linkage group number 11 in man
1.sickle cell anemia
2.leukemia
3.albinism
4.all of these
Which of the following kinds of atom do not occur in carbohydrates
1.carbon
2.hydrogen
3.nitrogen
4.oxygen
Which of the following organ is because of absence of teeth in birds
1.crop
2.syrinx
3.stomach
4.gizzard
Which one is harmful mollusc
1.slug
2.snail
3.oyester
4.star fish
Which structure is involve in gaseous exchange of plants
1.stomata
2.lenticels
3.cuticle
4.all of these