MCQ’S ON GYMNOSPERMS
1. ‘Saccus’ term is used for
(a) exine of pollen grains of Pinus
(b) intine of pollen grains of Pinus
(c) Wings of pollen grains of Pinus
(d) Wings of seeds of Pinus
Answer: (c)
2. Flowers and cones are similar because
(a) both assist seed dispersal
(b) both are responsible for attracting insects to pollinate
(c) both are shiny and bright
(d) both are reproductive structures
Answer: (d)
3. An autotrophic, prokaryotic and nitrogen-fixing symbiont is present in
(a) Cicer
(b) Cycas
(c) Sequoia
(d) Pinus
Answer: (b)
4. Pick the pair that is incorrectly matched
(a) Cycas – coralloid roots
(b) Abies – wood tar, wood gas
(c) Pinus – Mycorrhizal roots
(d) Sequoia – Redwood tree
Answer: (b)
5. This serves as a connecting link between the angiosperms and gymnosperms
(a) Gnetales
(b) Coniferales
(c) Ginkgoales
(d) Cycadales
Answer: (a)
6. Though Cycas has an embryo with two cotyledons, it is not grouped under dicotyledonous plants as
(a) ovules are naked
(b) possesses compound leaves
(c) has megasporophyll
(d) resembles a palm tree
Answer: (a)
7. In gymnosperms, the ovules typically are
(a) bitegmic and anatropous
(b) bitegmic and orthotropous
(c) unitegmic and orthotropous
(d) unitegmic and anatropous
Answer: (c)
8. Tallest known gymnosperm is
(a) Pinus
(b) Ginkgo
(c) Sequoia
(d) Ephedra
Answer: (c)
9. Inverted omega-shaped organization of vascular bundles is seen in
(a) cycas root
(b) cycas stem
(c) cycas leaflet
(d) cycas rachis
Answer: (d)
10. Phanerogams without the ovaries are
(a) angiosperms
(b) pteridophytes
(c) gymnosperms
(d) all the above
Answer: (c)
MCQ’S ON PHYLUM ASCHELMINTHES
1. Ascaris has ____________________ cells in the excretory system
(a) Green gland
(b) Flame
(c) Nephron
(d) Renette
Answer: (d)
2. Syncytial epidermis is found in_______.
(a) Ascaris
(b) Metaphire
(c) Housefly
(d) Periplaneta
Answer: (a)
3. ______________ is known as a coelom derived from blastocoel
(a) Enterocoel
(b) Haemocoel
(c) Pseudocoel
(d) Schizocoel
Answer: (c)
4. This is the basis on which female Ascaris can be identified.
(a) Two spicules found at the posterior end
(b) Presence of postanal and preanal papillae
(c) Straight posterior end
(d) Common cloacal aperture
Answer: (c)
5. In Ascaris, the period of incubation outside the human body is
(a) More than 30 days
(b) 15-30 days
(c) 8-14 days
(d) 4-8 days
Answer: (b)
6. In the life cycle of Ascaris, the infective stage is
(a) Third lava
(b) Second larva
(c) Cyst
(d) Fertilized egg
Answer: (b)
7. The body cavity of Ascaris is pseudocoel as
(a) it is filled with pseudocoelomic fluid
(b) has very little parenchyma
(c) contains large cells termed pseudocoelocytes
(d) bound extremely by muscle layer and internally by intestines
Answer: (d)
8. Ascaris lumbricoides is found living in the intestine of
(a) Pig
(b) Homo sapiens
(c) Monkey
(d) Goat and sheep
Answer: (b)
9. The process of morphological differentiating male and female sexes is known as
(a) sexual dimorphism
(b) polymorphism
(c) variation
(d) none of the above
Answer: (a)
10. This has no alternate host
(a) Plasmodium vivax
(b) Tapeworm
(c) Fasiola hepatica
(d) Ascaris lumbricoides
Answer: (d)
MCQ’S OF LAMARCKISM
1. This is an example of industrial melanism is
(a) Mutation
(b) Neo Darwinism
(c) Neo Lamarckism
(d) Natural selection
Answer: (d)
2. Most likely, people who perform tough manual work can develop
(a) thick epidermis on their palms
(b) thick subcutaneous fat in their palms
(c) greater quantity of melanin all over the body
(d) greater number of sweat pores in their hands
Answer: (a)
3. In Lamarck’s view, the key of organic evolution is that each progeny
(a) shows struggle for existence
(b) characters acquired by parental generation are inherited
(c) is similar to its parents
(d) phylogeny is repeated in its ontogeny
Answer: (b)
4. 72 generations of Drosophila were kept in darkness by a scientist. Despite that, the first flies possessed eyes that were normal. This disapproves the theory of
(a) Acquired characters
(b) Synthetic theory
(c) Natural selection
(d) use and disuse
Answer: (a)
5. This is a most popular example of Lamarck
(a) Primrose
(b) Snakes
(c) African Giraffe
(d) Both (b) and (c)
Answer: (d)
6. The idea of use and disuse of organs was given by
(a) Lamarck
(b) Morgan
(c) Darwin
(d) Hugo de Vries
Answer: (a)
7. Acquired characteristics of Lamarck are not inherited and have an evolutionary value. Who gave this statement?
(a) Weismann
(b) Hugo de Vries
(c) TH Morgan
(d) Charles Darwin
Answer: (a)
8. Who stated this theory – organ in use will develop and if not used will weaken to turn vestigial
(a) Mendel
(b) De Vries
(c) Darwin
(d) Lamarck
Answer: (d)
9. Scientists regarded as Neo Lamarckists are
(a) Correns, Hugo de Vries and Tschermak
(b) August Weismann and T.H Morgan
(c) Hardy Weinberg
(d) Kammerer and Mc Dougall
Answer: (d)
10. Germplasm theory against Lamarck’s principle was put forward by
(a) Darwin
(b) Lamarck
(c) Weismann
(d) Hugo de Vries
Answer: (c)
MCQ’S ON APOPTOSIS
1. This is an extracellular messenger of apoptosis
(a) tumor necrosis factor
(b) serine
(c) translation inhibitor
(d) ribozyme
Answer: (a)
2. This is concerned with the intrinsic pathway of apoptosis
(a) cytochrome d
(b) cytochrome c
(c) cytochrome b
(d) cytochrome a
Answer: (b)
3. Apoptotic bodies can be recognized with the presence of these on the surface
(a) phosphatidyl tyrosine
(b) phosphatidylinositol
(c) phosphatidylcholine
(d) phosphatidylserine
Answer: (d)
4. Apoptotic cells detach due to the inactivation of this
(a) PKC
(b) PKB
(c) RAF1
(d) FAK
Answer: (d)
5. Shrinking of the nucleus is caused when this inactivates
(a) gelsolin
(b) tubulin
(c) actin
(d) lamin
Answer: (d)
6. This cell organelle participates actively in animal apoptosis
(a) nucleus
(b) vacuoles
(c) mitochondria
(d) chloroplast
Answer: (c)
7. This can stimulate cytochrome release from mitochondria
(a) Akt
(b) Bid
(c) Bad
(d) Smac
Answer: (b)
8. This cannot be killed by apoptosis
(a) immune cells
(b) cells with DNA damage
(c) cancer cells
(d) a cell infected with viruses
Answer: (c)
9. This is an anti-apoptotic protein
(a) Bim
(b) Bcl-Xs
(c) Bfl 1
(d) NOXA
Answer: (c)
10. This is an active cell death process
(a) necrosis
(b) lysis
(c) apoptosis
(d) senescence
Answer: (c)
MCQ’S ON MANURES AND FERTILIZERS
1. Green manure plants are
(a) Poaceae
(b) Solanaceae
(c) Leguminosae
(d) Compositae
Answer: (c)
2. This chemical fertilizer is essential for better rhizobial nitrogen fixation
(a) calcium
(b) potassium
(c) sodium
(d) phosphorus
Answer: (d)
3. Azolla is used as a biofertilizer as it possesses
(a) humus in large quantities
(b) rhizobium
(c) mycorrhiza
(d) cyanobacteria
Answer: (d)
4. Pyrethrin is obtained from
(a) Chrysanthemum cinerariifolium
(b) Azadirachta indica
(c) Urtica dioica
(d) Tagetes erecta
Answer: (a)
5. This is not included in organic farming
(a) crop rotation
(b) chemical fertilizer
(c) green manures
(d) compost and farmyard manures
Answer: (b)
6. Appropriate use of cow dung is made in
(a) medicine
(b) fuel
(c) manure
(d) building/construction material
Answer: (c)
7. In children, this disease is caused due to excess nitrate fertilizers usage
(a) mumps
(b) jaundice
(c) septicemia
(d) methaemoglobinaemia
Answer: (d)
8. For paddy, the best fertilizer is
(a) Bacillus polymyxa
(b) Bacillus megaterium
(c) Azolla pinnata
(d) Rhizobium meliloti
Answer: (c)
9. Composted manure is formed from
(a) farm and household refuse
(b) animal refuse and rotten vegetables
(c) organic wastes from where biogas extraction takes place
(d) green and farmyard manure
Answer: (b)
10. Green manure is
(a) Maize
(b) Rice
(c) Sorghum
(d) Sesbania
Answer: (d)
