NEET Test Series-2021 to 2022 MCQ Quiz Hub

1.  In corolla length of Nicotiana longiflora, polygenic inheritance was studied by
Nilsson-Ehle
Joseph Kolreuter
 E.M. East
Francis Galton

2. Marriages between close relatives should be avoided as it causes more
Abnormalities in child birth
Mutations
Recessive alleles to come together
Multiple births

3. When two or more nonallelic gene pairs affect the same character in the same way, it is called
pleiotropy
 polygenic inheritance
additive expressivity
total penetrance

4.  Polygenes exhibit
Different phenotypes
Different genotypes
Similar genotypes and phenotypes
Both (a) and (b)

5.  Traits which exhibit continuous phenotypic variation are typically determined by this inheritance form
 incomplete dominance
polygene inheritance
multiple-allele inheritance
sex-linked inheritance

6. One of the X chromosomes in females is inactivated by
environmental factors
enzymes coded for by mitochondrial DNA
number of dominant genes found on each X chromosome
epigenetic markers

7. Pick the correct statement
Pleiotropic genes exhibit single phenotype
 Pleiotropy is caused by a gene that has multiple phenotypic effect
Lethal genes causes the appearance of ancestral characters
Sickle cell anemia is an example of multifactorial inheritance

8. Which of these illustrates pleiotropy?
 Matings between earless sheep and long eared sheep always result in short eared offspring
Human cystic fibrosis causes many symptoms from respiratory distress to digestive problems
Wheat kerneis can range from white to red in color, a trait governed by multiple genes
The genes for scarlet eyes and hairy body in fruit flies are located on the same chromosome

9. Morphan’s syndrome is as a result of
Polygene
Pseudogene
Modifier gene
 Pleiotropic gene

10.  Find the incorrect match
Nostoc – water blooms
 Basidiomycetes – puffballs
Spirogyra – motile gametes
Sargassum – Chlorophyll

11. Which of the following does not have a sexual mode of reproduction?
 Volvox
Spirogyra
Nostoc
 Ulothrix

12. Spirogyra belongs to which of the following classes?
Chlorophyceae
Phaeophyceae
Cyanophyceae
Rhodophyceae

13. Which of the following is false about Spirogyra?
nucleolus is complex
 heterothallism
each chloroplast contains a single pyrenoid
chromosomes are polycentric

14. The ladder-like structure formed in Spirogyra is the result of
Asexual reproduction
Direct conjugation
Lateral conjugation
Scalariform conjugation

15. Ribbon-shaped chloroplast is the characteristic feature of
Spirogyra
Chlamydomonas
Riccia
Ulothrix

16. The type of sexual reproduction in Spirogyra is
isogamous
anisogamous
oogamous
cleistogamous

17. In Spirogyra, pyrenoids are present in
cell wall
cytoplasm
 nucleus
chloroplast

18.  Spirogyra reproduce sexually by
fragmentation
conjugation
somatogamy
akinetes formation

19. Which of the following is also known as pond silk
Ulothrix
 Spirogyra
 Nostoc
Anabaena

20. Filaments of fungi, which have thread-like appearance are called
Hyphae
Sporangium
Conidia
Mycorrhiza

21. Penicillium belongs to
 Deuteromycetes
Phycomycetes
Ascomycetes
 Basidiomycetes

22. Formation of dikaryon is characteristic of
Phycomycetes
 Basidiomycetes
Ascomycetes
Both (b) and (c)

23. Penicillium camemberti and Penicillium roqueforti are known for
causing disease to animals
causing disease to plants
imparting flavour to cheese
 none of the above

24. Penicillium is used in the production of
antibiotics
cheese fermentation
both (a) and (b)
 none of the above

25. No. of ascospores formed in each ascus of Penicillium is
4
8
12
16

26.  The fruiting body (ascocarp) of Penicillium is
Apothecium
Cleistothecium
Perithecium
Acrostroma

27. Which of the following is true about conidiophores of Penicillium?
binucleate and colourless
binucleate and pigmented
 multicellular and branched
Uninucleate and colourless

28. Which one of the following is known as blue mould?
 Penicillium
 Rhizopus
Mucor
 Aspergillus

29.  Asexual spores produced terminally on hyphae are called
 Meiospores
 Anthospores
Sporangiophores
Conidia

30. Find the correct match
Molluscs – acoelomate
 Platyhelminthes – coelomate
 Aschelminthes – pseudocoelomate
 Insects – pseudocoelomate

31. The fluid that comes out of earthworm while piercing it (without damaging its gut) is
slimy mucous
 excretory fluid
hemolymph
 coelomic fluid

32.  Which of the following is not true about Annelida?
Ventral nerve cord
 Closed circulatory system
Segmentation
 Pseudocoelom

33. How platyhelminthes differ from annelids?
 bilateral symmetry
pseudocoel
body cavity is absent
none of the above

34. Where does true coelom present in the body?
between mesoderm and endoderm (body wall)
between body wall and ectoderm
mesoderm and ectoderm
ectoderm and endoderm

35. The body cavity found in echinoderms and chordates is
 haemocoel
enterocoelom
 pseudocoelom
schizocoelom

36. Which of the following develops into pseudocoelom?
 Archenteron
Blastocoel
Embryonic mesoderm
Blastopore lip

37. Which of the following has haemocoel?
 Earthworm
Hydra
Cockroach
 Nereis

38. Common characteristics of coelenterates and sponges are
triploblastic and pseudocoelomate
triploblastic and acoelomate
diploblastic and acoelomate
 monoblastic and acoelomate

39. The characteristic feature of Ascaris is
pseudocoelom and no metamerism
true coelom and no metamerism
pseudocoelom and metamerism
true coelom and metamerism

40.  Ribosomes are produced and assembled in
 mitochondria
 cytoplasm
nucleolus
Golgi apparatus

41.  An outer membrane is not present in
 lysosomes
 mitochondria
plastid
nucleoli

42.  Nucleoproteíns are synthesised in
cytoplasm
nucleoplasm
nuclear envelope
nucleolus

43.  Which of the components of nucleolus disappears during late prophase and reappears during telophase?
 Nucleolus
Nucleoplasm
Chromosomes
 Nuclear pore

44. The main function of nucleolus is
Protein synthesis
 ATP production
 DNA synthesis
 rRNA synthesis

45.  Which of the following can pass through a nuclear pore?
Ribosomal subunits
Mitochondria
mRNA
both (a) and (c)

46. Which of the following are synthesised in the nucleolus?
 tRNA
 rRNA
 DNA
 all of the above

47. Nucleoli were discovered by
Felice Fontana
Robert Hook
Robert Brown
 Leeuwenhoek

48. Synthesis of ribosomes in prokaryotes occurs in
nucleus
nucleolus
cytosol
 nucleoplasm

49. Find the incorrect statement
nucleoli are synthesised around nucleolar organizing regions
 only one nucleolus is found in the nucleus
transcription of rDNA occurs in the fibrillar centre
nucleolus contains a high concentration of iron in various plant species

50. Which of the following gene helps in identifying transformed cells?
plasmid
selectable marker
 structural gene
 vector