Q- The process by which fruits are developed without fertilization is called _________.
(a) Apomixis
(b) Parthenocarpy
(c) Parthenogenesis
(d) Self-pollination
Answer: (b)
Q- In which of the plant species, parthenocarpy takes place?
(a) Mango
(b) Banana
(c) Peach
(d) Jackfruit
Answer: (b)
Q- Which of these plants will lose their economic value if its fruits are as a result of induced parthenocarpy?
(a) Banana
(b) Orange
(c) Grape
(d) Pomegranate
Answer: (d)
Q- Which of the following plant hormones stimulates the development of parthenocarpic fruit?
(a) Auxin
(b) Cytokinin
(c) Gibberellins
(d) All of the above
Answer: (d)
Q- Which of the following statement is false about parthenocarpy?
(a) Fruits developed are seedless
(b) The Ovary is stimulated with pollination
(c) The process is used as it yields high quality and consistency
(d) None of the above
Answer: (b)
Q- The fruit in tomato is classified into _____.
(a) Pepo
(b) Pome
(c) Drupe
(d) Berry
Answer: (d)
Q- Which of the following statement is false about Fabaceae?
(a) It was earlier mentioned to as Papilionoideae
(b) It is widely distributed across the world
(c) It is common to find plants with fibrous root system here
(d) It is a subfamily of family Leguminosae
Answer: (c)
Q- Which of the following statement is false about Hilum?
(a) Hilum lies underneath micropyle
(b) Ccar over the seed coat
(c) Growing seeds are attached to the fruit through the hilum
(d) All of the above
Answer: (a)
Q- What is the fruit of wheat and rice called?
(a) Follicle
(b) Caryopsis
(c) Siliqua
(d) Achene
Answer: (b)
Q- Which of the following is not an agricultural product?
(a) Rice
(b) Jute
(c) Alum
(d) Cotton
Answer: (c)
Q- This factor contributes to the carbon cycle
(a) fossil fuel combustion
(b) respiration
(c) photosynthesis
(d) all of these
Answer: (d)
Q- The source of carbon to plants in the carbon cycle is
(a) fossil fuels
(b) carbonate rocks
(c) atmospheric carbon dioxide
(d) all of the above
Answer: (c)
Q- The role of bacteria in the carbon cycle is
(a) Breakdown of organic compounds
(b) Chemosynthesis
(c) Photosynthesis
(d) Assimilation of nitrogen compounds
Answer: (a)
Q- In the carbon cycle, the human body returns carbon to the atmosphere through this way:
(a) formation of glucose
(b) waste products
(c) photosynthesis
(d) cellular respiration
Answer: (d)
Q- Respiration and photosynthesis are central to this process
(a) nitrogen cycle
(b) phosphorous cycle
(c) carbon cycle
(d) sulphur cycle
Answer: (c)
Q- The difference between the phosphorous cycle and carbon cycle lies in the fact that
(a) the phosphorous cycle does not include a gaseous phase but the carbon cycle does
(b) phosphorous does not enter living entities but carbon enters
(c) the phosphorous cycle includes a solid phase, the carbon cycle does not
(d) primary reservoir of the phosphorous cycle is the atmosphere, but rocks are the primary reservoirs for carbon cycle
Answer: (a)
Q- Most of the global warming is due to the perturbation of which of these cycles?
(a) Global nitrogen cycle
(b) Global carbon cycle
(c) Global water cycle
(d) All of these cycles equally contribute
Answer: (b)
Q- This carbon isotope is radioactive and very rare
(a) Carbon – 11
(b) Carbon – 12
(c) Carbon – 13
(d) Carbon – 14
Answer: (d)
Q- By this method, the majority of carbon moves from the lithosphere to the atmosphere
(a) erosion
(b) deposition
(c) weathering
(d) fossil fuel burning
Answer: (d)
Q- These entities sequester most carbon from the atmosphere
(a) Plants
(b) Archaea
(c) Bacteria
(d) Insects
Answer: (a)
Q- Haemophilia is caused by
(a) Bacteria
(b) Virus
(c) Genetic mutation
(d) Cause unknown
Answer: (c)
Q- This is a complication of haemophilia
(a) Bleeding in the head
(b) joint swelling
(c) death
(d) all of these
Answer: (d)
Q- In patients with haemophilia, which of these can increase the risk of cerebral microbleeds?
(a) cardiovascular risk factors
(b) increased age
(c) Hepatitis C infection
(d) all of these
Answer: (d)
Q- This disease falls under the same category as colourblindness in man
(a) Presbyopia
(b) Night blindness
(c) Diabetes insipidus
(d) Haemophilia
Answer: (d)
Q- This is ineffective against antibiotics
(a) bacterial infected gonorrhoea
(b) bacterial infected wound
(c) haemophilia
(d) bacterial infected throat
Answer: (c)
Q- This lacks in patients with haemophilia A
(a) X chromosome
(b) Calcium
(c) Antihemophilic factor
(d) Plasma thromboplastin
Answer: (c)
Q- Rarely females experience the physiological defect of haemophilia as they do so only when they are
(a) carrier for the defect
(b) wives of haemophilic husbands
(c) homozygous for the defect
(d) heterozygous for the defect
Answer: (c)
Q- Haemophilia is
(a) X – linked
(b) Y – linked
(c) Z – linked
(d) Autosomal
Answer: (a)
Q- Haemophilia is as a result of a lack of
(a) STH
(b) ADH
(c) AHF
(d) ACTH
Answer: (c)
Q- The reason why haemophilia is more commonly observed in human males than in females is due to
(a) the disease is due to Y-linked recessive mutation
(b) the disease is due to X-linked recessive mutation
(c) as a huge population of girls die in infancy
(d) the disease is due to X-linked dominant mutation
Answer: (b)
Q- This fungi division includes ‘Club fungi’
(a) Zygomycota
(b) Deuteromycota
(c) Basidiomycota
(d) Ascomycota
Answer: (c)
Q- This group is used to represent pathological fungi
(a) Penicillium
(b) Truffles, mushrooms and morels
(c) Smuts, rusts and moulds
(d) All of the above
Answer: (c)
Q- The fungi which derive their food directly from dead organic matter are known as
(a) Predators
(b) Decomposers
(c) Mutualists
(d) Parasitic fungi
Answer: (b)
Q- What is the name of the special hyphal tips through which parasitic fungi absorb nutrients directly from the cytoplasm of the living host?
(a) Haustoria
(b) Mildew
(c) Constricting ring
(d) All of the above
Answer: (a)
Q- Which of these entities is an indicator of the SO2 pollution of air?
(a) Puffballs
(b) Mushrooms
(c) Mosses
(d) Lichens
Answer: (d)
Q- The fungal disease – the black rust of wheat is caused by
(a) Melampsora lini
(b) Claviceps purpurea
(c) Puccinia graminis tritici
(d) Albugo candida
Answer: (c)
Q- What does ‘Perfect stage’ of a fungus indicate?
(a) indicates that it can reproduce asexually
(b) indicates that it is perfectly healthy
(c) indicates that it is able to form perfect sexual spores
(d) All of the above
Answer: (c)
Q- Death angel/death cap (amanita) and Jack O Lantern mushroom are all examples of
(a) Poisonous mushrooms
(b) Edible mushrooms
(c) None of the above
(d) Both (a) and (b)
Answer: (a)
Q- Covered smut of Sorghum is caused by
(a) Sphacelotheca sorghi
(b) Sphacelotheca cruenta
(c) Sphacelotheca reiliana
(d) Tolyposporium ehrenbergii
Answer: (a)
Q- Oyster mushroom is an example of predator fungi that attacks
(a) Tapeworms
(b) Pinworms
(c) Platyhelminthes
(d) Roundworms
Answer: (d)
Q- Which of the following factors promotes the opening of the stomatal aperture?
(a) A decrease in guard cell turgidity
(b) When the outer walls of the guard cells contracts
(c) Radial orientation of the cellulose microfibrils in the cell wall of the guard cells
(d) The longitudinal orientation of the cellulose microfibrils in the cell wall of guard cells
Answer: (c)
Q- Which of the following is made of dead cells?
(a) Phloem
(b) Phellem
(c) Collenchyma
(d) Xylem parenchyma
Answer: (b)
Q- Which of the following statement are true about the Tyloses – the balloon-shaped structures?
(a) Characterise the sapwood
(b) Original in the lumen of vessels
(c) Are linked to the ascent sap through xylem vessels
(d) Are extensions of the xylem parenchyma cells into vessels
Answer: (d)
Q- Which of the following events takes place in a ring girdled plant?
(a) The eath of the root first
(b) The death of the shoot first
(a) The shoots and the root dies first
(d) Neither the shoot nor the root will die
Answer: (c)
Q- This is one of the most recent and valid explanations for stomatal movements.
(a) Starch hydrolysis
(b) Transpiration
(c) Guard cell photosynthesis
(d) Potassium efflux and the influx
Answer: (d)
Q- Which of the following are the primary water-conducting elements of xylem in gymnosperms?
(a) Fibres
(b) Vessels
(c) Tracheids
(d) Transfusion tissue
Answer: (c)
Q- Which of the following is not a lateral meristem?
(a) Phellogen
(b) Cork cambium
(c) Intercalary meristem
(d) Interfascicular cambium
Answer: (c)
Q- In monocots, grafting is not possible as _________
(a) They show parallel venation
(b) they have scattered vascular bundles
(c) they lack cambium
(d) they are herbaceous
Answer: (c)
Q- Vascular bundles are closed in monocots as:
(a) presence of vascular cambium between xylem and phloem
(b) presence of xylem and phloem
(c) absence of vascular cambium
(d) xylem and phloem occur in separate bundles
Answer: (c)
Q- Difference between heartwood and sapwood is that heartwood
(a) shows the presence of fibres and rays
(b) has dead and non-conducting elements
(c) lacks parenchyma and vessels
(d) is susceptible to pathogens and pests
Answer: (b)
