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Q. No.Consider the following statements regarding brown algae:
I. The pigments are chl a, c and xanthophylls, fucoxanthin
II. Storage food is laminarin and mannitol
III. The cellulosic cell wall is covered with algin
IV. They have a centrally located vacuole
V. Their photosynthetic organs are called as fronds - leaf like structures
VI. They have pear shaped biflagellate zoospores
VII. They have two unequal laterally attached flagella.
The number of correct statements is
1. 5
2. 6
3. 7
4. 4
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch the following
|
Algae |
Stored food |
Flagellation |
|
(a) Brown algae (b) Red algae (c) Green alage |
(p) Floridean starch (q) Mannitol (r) Starch |
(i) 2, lateral (ii) 2-4, apical (iii) absent |
1 (a-r-ii), (b-p-iii), (c-q-i)
2 (a-q-i), (b-p-iii), (c-r-ii)
3 (a-q-i), (b-r-ii), (c-p-iii)
4 (a-q-i), (b-p-ii), (c-r-iii)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology(i) Vegetative reproduction usually takes place by fragmentation in unicellular forms
(ii) Zoospore formation is rare
(iii) Sexual reproduction can be isogamous, anisogamous or oogamous
(iv) Asexual reproduction can occur by flagellated zoospores produced in zoosporangia
(v) Chlamydomonas, Chara, Spirogyra, Volvox and Ulothrix belong to green algae
How many of the above statements are correct?
1. Four
2. Two
3. Three
4. One
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology(i) Sexual reproduction may be isogamous, anisogamous or oogamous
(ii) The gametes are always without flagella
(iii) Gracilaria belongs to brown algae
(iv) Common forms are Ectocarpus, Dictyota, Laminaria, Sargassum and Fucus
(v) The gametes are pyriform (pear-shaped) and bear two laterally attached flagella
How many of the above statements are correct?
1. Two
2. Three
3. One
4. Five
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology(i) Majority of the red algae are marine, mostly found in warmer sea
(ii) They occur in both well lighted regions close to the surface of water and also at great depths in ocean where relatively less light penetrates
(iii) These lack chlorophyll-d
(iv) These are mostly unicellular
(v) These lack vegetative propagation
How many of the above statements are incorrect?
1. One
2. Three
3. Four
4. Five
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology(i) Sporophyte is multicellular
(ii) Sporophyte is free living
(iii) The spores germinate to produce sporophyte
(iv) Some cells of sporophyte undergo reduction division to produce haploid spores
(v) Gametophyte is non-photosynthetic structure How many of the above statements are correct?
How many of the above statements are correct?
1. Three
2. Five
3. Four
4. Two
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology(i) Mosses serve as food for birds and herbivores
(ii) Sphagnum, a liverwort, provide peat that have long been used as fuel
(iii) Sphagnum, because of their high capacity to hold water is used as packaging-material for trans-shipment of living plant materials
(iv) Mosses have a little role during ecological succession
(v) Mosses, as they form dense mat, prevent soil erosion
How many of the above statements are correct?
1. Three
2. Four
3. Five
4. Two
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology(i) The main plant body is the sporophyte.
(ii) The sporophyte is differentiated into true roots, stems, and leaves.
(iii) Their gametophyte lacks vascular bundle.
(iv) Microphylls are found in Selaginella and macrophytes in the ferns like Dryopteris.
(v) Strobili or cones are found in Selaginella and Equisetum.
How many of the above statements are correct?
1. Four
2. Five
3. Two
4. Three
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology(i) Majority of the pteridophytes are heterosporous
(ii) Selaginella and Salvinia are homosporous
(iii) The megaspore germinate to form male gametophyte
(iv) Pteridophytes may show seed formation in a few cases
(v) Selaginella is a type of fern
How many of the above statements are incorrect?
1. Five
2. Two
3. Three
4. Four
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology(i) The redwood tree, Sequoia, is one of the tallest tree species
(ii) Mycorrhizal roots are found in Pinus and coralloid roots in Cycas
(iii) The roots of gymnosperms are generally tap roots
(iv) In gymnosperms, stems may be unbranched (e.g., Pinus) or branched (e.g., Cycas)
(v) In Cycas, the pinnate leaves persist for a few years.
How many of the above statements are correct?
1. Four
2. Five
3. Two
4. Three
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