Plant Anatomy And Physiology MCQ

Test your knowledge with important Plant Anatomy And Physiology MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Plant Anatomy And Physiology MCQs at Bissoy

• An enzyme has a distinct cavity or cleft in which the substrate is bound, known as
  ক

  Enzyme site

  খ

  Reaction site

  গ

  Control site

  ঘ

  Active site
• The species distributed in a belt around the north-pole include
  ক

  Saxifraga oppositaefolia

  খ

  Ranunculus nivalis

  গ

  Carex lapponica

  ঘ

  All of the above
• Mycorrhizae are formed by the association of
  ক

  A fungus with the roots in the soil

  খ

  An algae with the roots in the soil

  গ

  A virus with the roots in the soil

  ঘ

  A bacteria with the roots in the soil
• A formation of little trees upto 4 m in height which are richly armed with thorns and for the most part have ternate or pinnate leaves, but are leafless during dry season is known as
  ক

  Thorn bushland

  খ

  Thorn forest

  গ

  Orchard scrub

  ঘ

  None of the above
• Chemiosmotic coupling, the most widely accepted explanation of phosphorylation was proposed by
  ক

  Embden

  খ

  Myerhof

  গ

  Mitchell

  ঘ

  Parnas
• Which of the following elements is not essential for plant growth?
  ক

  Sodium

  খ

  Potassium

  গ

  Calcium

  ঘ

  Magnesium
• A cell increases in volume when it is placed in
  ক

  hypertonic solution

  খ

  hypotonic solution

  গ

  isotonic solution

  ঘ

  None of the above
• The first dominant colonists among the flora of Iithophytes are
  ক

  Algae and bryophytes

  খ

  Fungi and pteridophytes

  গ

  Algae and mosses

  ঘ

  Algae and lichens
• At very high intensity beyond a certain point, the photosynthesising cells exhibit photo-oxidation of its constituents. This phenomenon is caIled
  ক

  Polarization

  খ

  Solarization

  গ

  Photorespiration

  ঘ

  Phosphorylation
• According to Hatch and Slack, the primary carboxylation in C₄ plants takes place in the
  ক

  Bundle sheath cells

  খ

  Mesophyll cells

  গ

  Guard cells

  ঘ

  Epidermal cells
• Who among the following found that the application of synthetic auxins can bring about the development of an unpollinated ovary into a fruit?
  ক

  Gustafson (1936)

  খ

  Lewis (1942)

  গ

  Hostermann (1942)

  ঘ

  Cochran (1935)
• According to Calvin and Benson, the initial accepter of the CO₂ molecule during photosynthesis is
  ক

  Phosphoglyceric acid (PGA)

  খ

  Phosphoglyceraldehyde (PGAL)

  গ

  Nicotinamide adenine dinucleotide phosphate (NADP)

  ঘ

  Ribulose biphosphate (RuBP)
• Which of the following types of light are strongly absorbed by plants?
  ক

  Violet and orange

  খ

  Blue and red

  গ

  Indigo and yellow

  ঘ

  Yellow and violet
• In which of the following plants the cell wall formation of the endosperms occurs at the 4-nucleate stage?
  ক

  Asclepias

  খ

  RaffIesia

  গ

  Coffea

  ঘ

  Cannabis
• The enzymes which cause the substrate molecule to split into two different components are known as
  ক

  Adding enzymes

  খ

  Hydrolases

  গ

  Oxidation-reduction enzymes

  ঘ

  Isomerases
• In root nodules of legumes, leghaemoglobin is important because
  ক

  it transports oxygen to the root nodule

  খ

  it acts as an oxygen scavenger

  গ

  it provides energy to the nitrogen fixing bacterium

  ঘ

  it act as a catalyst is transmination
• Fruits stored in a cold chamber exhibit longer storage life because
  ক

  exposure to sunlight is prevented

  খ

  concentration of carbon dioxide in the environment is increased

  গ

  rate of respiration is decreased

  ঘ

  there is an increase in humidity
• The symptom when the entire leaf loses its pigment is known as
  ক

  Chromosis

  খ

  Albinism

  গ

  Vein-handling

  ঘ

  Chlorosis
• The sensitivity of lettuce seeds to farred irradiation increases
  ক

  When the seeds imbibe water for 5 hours

  খ

  When the seeds imbibe water for more than 20 hours

  গ

  When the seeds diffuse water for more than one hour

  ঘ

  All of the above
• On the maturation of the archegonium, which of the following disintegrate forming a mucilaginous substance?
  ক

  Neck canal cells

  খ

  Ventral canal cells

  গ

  Cover cells

  ঘ

  Both A and B
• The examples of plants possessing ruminate endosperm include
  ক

  Beetle nut

  খ

  Passiflora

  গ

  Antigonon

  ঘ

  All of the above
• Which of the following plants can be propagated when planted in soil?
  ক

  Tinospora

  খ

  Colocasia

  গ

  Gladiolus

  ঘ

  Crocus
• The process of occupation of a particular area by different plant communities from their birth to maturity is known as
  ক

  Plant formation

  খ

  Plant succession

  গ

  Faciation

  ঘ

  Community complex
• Of the elements of the flora of India, which of the following is dominant?
  ক

  Malayan

  খ

  Australian

  গ

  African

  ঘ

  Tibetan
• According to Hutchinson, the totality of biotic and abiotic factors to which a given species is uniquely adapted is known as
  ক

  Ecosystem

  খ

  Ecological factor

  গ

  Ecological niche

  ঘ

  None of the above
• Organisms, both resting and swimming types, that are confined to the water surface are known as
  ক

  Nektons

  খ

  Neustons

  গ

  Planktons

  ঘ

  All of the above
• Consider the following statements and choose the correct answer:<br>1. For the development of viable seeds the double fertilization is very necessary<br>2. The net result of double fertilization is the formation of endosperm from the triploid nucleus<br>3. In Angiosperms very free nuclear divisions take place as in Gymnosperms<br>4. The endosperm nucleus has both maternal and paternal characters showing physiological importance like hybrid vigour
  ক

  Only 1, 2 and 3 are true

  খ

  Only 2, 3 and 4 are true

  গ

  Only 1, 3 and 4 are true

  ঘ

  Only 1, 2 and 4 are true
• The most definite information about cytokinin synthesis concerns the formation of
  ক

  Adenine

  খ

  Guanine

  গ

  Cytosine

  ঘ

  Thymine
• After the cold requirement is satisfied, the actual germination, in most situations, takes place efficiently at about
  ক

  4° C

  খ

  -40° C

  গ

  10° C

  ঘ

  25° C
• Which of the following plant hormones regulates growth particularly by stimulating cell elongation in stems?
  ক

  Gibberellin

  খ

  Cytokinin

  গ

  Ethylene

  ঘ

  Auxin