Multiple Choice QuestionsHow many organisms in the list given below are autotrophs?
Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Sacharomyces, Trypanosoma, Porphyra, Walfia.
Four
Five
Six
Six
Read the following five statements and answer as asked to them
I. In Equisetum the female gametophyte is retained on the parent sporophyte.
II. In Ginkgo male gametophyte is not independent.
III. The sporophyte in Riccia is more developed than that in Polytrichum.
IV. Sexual reproduction in Volvox is isogamous.
V. The spores of the above statements are correct?
Two
Three
Four
Four
D.
Four
The spore of Equisetum germinate shortly after shedding and give rise to form prothallus. Prothalli of Equisetum are basically monoecious and the gametophytes are rarely seen.
The simplest known sporophyte among bryophytes is that of Riccia while highest evolved known is Bryopsida (Polytrichum, Pogonatum).
Sexual reproduction in Volvox is oogamous type.
The spores in slime molds (e.g., Physarum) are haploid, unicellular usually globose with smooth, spiny or reticulately thickened cell walls.
Which one of the following pairs is wrongly matched?
Ginkgo – Archegonia
Salvinia – Prothallus
Viroids – RNA
Viroids – RNA
In the five-kingdom classification, Chlamydomonas and Chlorella have been included in
Protista
Algae
Plantae
Plantae
Which one of the following structures is an organelle within an organelle?
Ribosome
Peroxisome
ER
ER
Which one of the following organisms is correctly matched with its three characteristics?
Pea: C3 pathway, Endospermic seed, Vexillary aestivation
Tomato: Twisted aestivation, Axile placentation, Berry
Onion: Bulb, Imbricate aestivation, Axile placentation
Onion: Bulb, Imbricate aestivation, Axile placentation
How many plants in the list given below have marginal placentation?
Mustard, Gram, Tulip, Asparagus, Arhar, Sun hemp, Chilli, Colchicine, Onion, Moong, Pea, Tobacco, Lupin
Four
Five
Six
Six
Read the following four statements:
I. Both, photophosphorylation and oxidative phosphorylation involve uphill transport of protons across the membrane.
II. In dicot stems, a new cambium originates from cells of pericycle at the time of secondary growth.
III. Stamens in flowers of Gloriosa and Petunia are polyandrous.
IV. Symbiotic nitrogen fixers occurs in free-living state also in soil.
How many of the above statements are right
Two
Three
Four
Four
Through their effect on plant growth regulators, what do the temperature and light control in the plants?
Apical dominance
Flowering
Closure of stomata
Closure of stomata
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