Multiple Choice QuestionsHow many genome types are present in a typical green plants cell
More than five
More than ten
Two
Three
Assertion : Algae and fungi are classified as thallophytes.
Reason : They both are autotrophs.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
C.
If assertion is true but reason is false
According to Eichler's classification, Plant kingdom is divided into two sub-divisions:
(i) cryptogamae
(ii) phanerogamae.
Cryptogamae is further divided into 3 divisions- thallophyta, bryophyta and pteridophyta. Thallophyta in further divided into 2 classes, algae and fungi. Both of these groups have generally undifferentiated plant body ie, they are not differentiated into true root, stem and leaves, hence they are called thallophyta. Also they are non vascular plants. But algae are chlorophyllous and hence show autotrophic mode of nutrition ie can prepare their own food. But fungi are non- chlorophyllous and cannot prepare their own food. So they are heterotrophic in nature.
Assertion : Conifer trees produce a large quantity of wind borne pollen grains.
Reason : The pollen grains have wings.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
seed plants showing abnormal forms of growth and development
plants described only in fossil state
plants described in the literature but which Bentham and Hooker did not see in original
a few orders which could not be placed satisfactorily in the classification.
Which one of the following is correct matching of a plant, its habit and the forest type where it normally occurs?
Prosopis, tree, scrub
Saccharum, grass, forest
Shorea robusta, herb, tropical rain forest
Acacia catechu, tree, coniferous forest
Which one of the following categories of organisms do not evolve oxygen during photosynthesis
Red algae
Photosynthetic bacteria
C4 plants with Kranz anatomy
Blue green algae
Mossess and ferns are found in moist and shady places because both
require presence of water for fertilization
do not need sunlight for photosynthesis
depend for their nutrition on microorganisms which can survive only at low temperature
cannot compete with sun-loving plants.
People recovering from long illness are often advised to include the alga Spirulina in their diet because it
makes the food easy to digest
is rich in proteins
has antibiotic properties
restores the intestinal microtlora
Azolla is used as a biofertilizer because it
multiplies very fast to produce massive biomass
has association of nitrogen - fixing Rhizobium
has association of nitrogen - fixing cyanobacteria
has association of mycorrhiza
Switch
