An outer membrane is not present in
1. lysosomes
2. mitochondria
3.plastid
4.nucleoli
 Asexual spores produced terminally on hyphae are called
1. Meiospores
2. Anthospores
3.Sporangiophores
4.Conidia
 Find the incorrect match
1.Nostoc – water blooms
2. Basidiomycetes – puffballs
3.Spirogyra – motile gametes
4.Sargassum – Chlorophyll
 In corolla length of Nicotiana longiflora, polygenic inheritance was studied by
1.Nilsson-Ehle
2.Joseph Kolreuter
3. E.M. East
4.Francis Galton
 NucleoproteÃns are synthesised in
1.cytoplasm
2.nucleoplasm
3.nuclear envelope
4.nucleolus
 Polygenes exhibit
1.Different phenotypes
2.Different genotypes
3.Similar genotypes and phenotypes
4.Both (a) and (b)
 Ribosomes are produced and assembled in
1. mitochondria
2. cytoplasm
3.nucleolus
4.Golgi apparatus
 Spirogyra reproduce sexually by
1.fragmentation
2.conjugation
3.somatogamy
4.akinetes formation
 The fruiting body (ascocarp) of Penicillium is
1.Apothecium
2.Cleistothecium
3.Perithecium
4. Acrostroma
 Traits which exhibit continuous phenotypic variation are typically determined by this inheritance form
1. incomplete dominance
2.polygene inheritance
3.multiple-allele inheritance
4.sex-linked inheritance
 Which of the components of nucleolus disappears during late prophase and reappears during telophase?
1. Nucleolus
2.Nucleoplasm
3.Chromosomes
4. Nuclear pore
 Which of the following can pass through a nuclear pore?
1.Ribosomal subunits
2.Mitochondria
3.mRNA
4.both (a) and (c)
 Which of the following is not true about Annelida?
1.Ventral nerve cord
2. Closed circulatory system
3.Segmentation
4. Pseudocoelom
Common characteristics of coelenterates and sponges are
1.triploblastic and pseudocoelomate
2.triploblastic and acoelomate
3.diploblastic and acoelomate
4. monoblastic and acoelomate
Filaments of fungi, which have thread-like appearance are called
1.Hyphae
2.Sporangium
3.Conidia
4.Mycorrhiza
Find the correct match
1.Molluscs – acoelomate
2. Platyhelminthes – coelomate
3. Aschelminthes – pseudocoelomate
4. Insects – pseudocoelomate
Find the incorrect statement
1.nucleoli are synthesised around nucleolar organizing regions
2. only one nucleolus is found in the nucleus
3.transcription of rDNA occurs in the fibrillar centre
4.nucleolus contains a high concentration of iron in various plant species
Formation of dikaryon is characteristic of
1.Phycomycetes
2. Basidiomycetes
3.Ascomycetes
4.Both (b) and (c)
How platyhelminthes differ from annelids?
1. bilateral symmetry
2.pseudocoel
3.body cavity is absent
4.none of the above
In Spirogyra, pyrenoids are present in
1.cell wall
2.cytoplasm
3. nucleus
4.chloroplast
Marriages between close relatives should be avoided as it causes more
1.Abnormalities in child birth
2.Mutations
3.Recessive alleles to come together
4.Multiple births
Morphan’s syndrome is as a result of
1.Polygene
2.Pseudogene
3.Modifier gene
4. Pleiotropic gene
No. of ascospores formed in each ascus of Penicillium is
1.4
2.8
3.12
4.16
Nucleoli were discovered by
1.Felice Fontana
2.Robert Hook
3.Robert Brown
4. Leeuwenhoek
One of the X chromosomes in females is inactivated by
1.environmental factors
2.enzymes coded for by mitochondrial DNA
3.number of dominant genes found on each X chromosome
4.epigenetic markers
Penicillium camemberti and Penicillium roqueforti are known for
1.causing disease to animals
2.causing disease to plants
3.imparting flavour to cheese
4. none of the above
Penicillium belongs to
1. Deuteromycetes
2.Phycomycetes
3.Ascomycetes
4. Basidiomycetes
Penicillium is used in the production of
1.antibiotics
2.cheese fermentation
3.both (a) and (b)
4. none of the above
Pick the correct statement
1.Pleiotropic genes exhibit single phenotype
2. Pleiotropy is caused by a gene that has multiple phenotypic effect
3.Lethal genes causes the appearance of ancestral characters
4.Sickle cell anemia is an example of multifactorial inheritance
Ribbon-shaped chloroplast is the characteristic feature of
1.Spirogyra
2.Chlamydomonas
3.Riccia
4.Ulothrix
Spirogyra belongs to which of the following classes?
1.Chlorophyceae
2.Phaeophyceae
3.Cyanophyceae
4.Rhodophyceae
Synthesis of ribosomes in prokaryotes occurs in
1.nucleus
2.nucleolus
3.cytosol
4. nucleoplasm
The body cavity found in echinoderms and chordates is
1. haemocoel
2.enterocoelom
3. pseudocoelom
4.schizocoelom
The characteristic feature of Ascaris is
1.pseudocoelom and no metamerism
2.true coelom and no metamerism
3.pseudocoelom and metamerism
4.true coelom and metamerism
The fluid that comes out of earthworm while piercing it (without damaging its gut) is
1.slimy mucous
2. excretory fluid
3.hemolymph
4. coelomic fluid
The ladder-like structure formed in Spirogyra is the result of
1.Asexual reproduction
2.Direct conjugation
3.Lateral conjugation
4.Scalariform conjugation
The main function of nucleolus is
1.Protein synthesis
2. ATP production
3. DNA synthesis
4. rRNA synthesis
The type of sexual reproduction in Spirogyra is
1.isogamous
2.anisogamous
3. oogamous
4.cleistogamous
When two or more nonallelic gene pairs affect the same character in the same way, it is called
1.pleiotropy
2. polygenic inheritance
3.additive expressivity
4.total penetrance
Where does true coelom present in the body?
1.between mesoderm and endoderm (body wall)
2.between body wall and ectoderm
3.mesoderm and ectoderm
4.ectoderm and endoderm
Which of the following are synthesised in the nucleolus?
1. tRNA
2. rRNA
3. DNA
4. all of the above
Which of the following develops into pseudocoelom?
1. Archenteron
2.Blastocoel
3.Embryonic mesoderm
4.Blastopore lip
Which of the following does not have a sexual mode of reproduction?
1. Volvox
2.Spirogyra
3.Nostoc
4. Ulothrix
Which of the following gene helps in identifying transformed cells?
1.plasmid
2.selectable marker
3. structural gene
4. vector
Which of the following has haemocoel?
1. Earthworm
2.Hydra
3.Cockroach
4. Nereis
Which of the following is also known as pond silk
1.Ulothrix
2. Spirogyra
3. Nostoc
4.Anabaena
Which of the following is false about Spirogyra?
1.nucleolus is complex
2. heterothallism
3.each chloroplast contains a single pyrenoid
4.chromosomes are polycentric
Which of the following is true about conidiophores of Penicillium?
1.binucleate and colourless
2.binucleate and pigmented
3. multicellular and branched
4.Uninucleate and colourless
Which of these illustrates pleiotropy?
1. Matings between earless sheep and long eared sheep always result in short eared offspring
2.Human cystic fibrosis causes many symptoms from respiratory distress to digestive problems
3.Wheat kerneis can range from white to red in color, a trait governed by multiple genes
4.The genes for scarlet eyes and hairy body in fruit flies are located on the same chromosome
Which one of the following is known as blue mould?
1. Penicillium
2. Rhizopus
3.Mucor
4. Aspergillus