The correct match [with respect to Whittaker’s Five Kingdom classification] is:
1. | Monera | All members have a cell wall |
2. | Protista | All members are photosynthetic |
3. | Fungi | All members are multi-cellular |
4. | Animalia | All members are heterotrophs |
Match the organisms in column I with habitats in column II.
Column I | Column II | ||
(a) | Halophiles | (i) | Hot springs |
(b) | Thermoacidophiles | (ii) | Aquatic environment |
(c) | Methanogens | (iii) | Guts of ruminants |
(d) | Cyanobacteria | (iv) | Salty areas |
Select the correct answer from the options given below:
(a) | (b) | (c) | (d) | |
1. | (iv) | (i) | (iii) | (ii) |
2. | (i) | (ii) | (iii) | (iv) |
3. | (iii) | (iv) | (i) | (ii) |
4. | (ii) | (iv) | (iii) | (i) |
How many organisms in the list given below are autotrophs ?
Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Sacharomyces, Trypanosoma, Porphyra, Wolfia
1. | Five | 2. | Six |
3. | Three | 4. | Four |
1. | They completely lack a cell wall. |
2. | They are the smallest living cells known. |
3. | They can survive without oxygen. |
4. | They are unable to cause disease in animals and plants. |
Organism | Nature of cell wall | |
1. | True bacterium | Polysaccharide + Amino acid |
2. | Fungus | With chitin |
3. | Euglenoids | Cellulosic |
4. | Diatoms | Embedded with silica |
1. | Mycoplasma has a rigid cell wall, while other bacteria do not. |
2. | Mycoplasma can survive without oxygen, while other bacteria cannot. |
3. | Mycoplasma lacks a cell wall, while other bacteria have a peptidoglycan cell wall. |
4. | Mycoplasma is larger in size compared to other bacteria. |
Column I | Column II | ||
A. | Diatoms | P. | Protozoa |
B. | Paramecium | Q. | Chrysophytes |
C. | Slime molds | R. | Fungi-like protists |
D. | Kelps | S. | Not listed in Protista |
A | B | C | D | |
1. | Q | P | R | S |
2. | P | Q | R | S |
3. | Q | P | S | R |
4. | S | P | Q | R |
Identify the incorrect statement:
1. | Chrysophytes include diatoms, which are chief producers in the ocean. |
2. | Dinoflagellates have stiff cellulose plates on the outer surface of their cell wall. |
3. | Euglenoids are heterotrophic organisms, which have a single flagellum. |
4. | Slime molds are saprophytic protists. |
Assertion (A): | Diatoms have left behind a large amount of cell wall deposits in their habitats. |
Reason (R): | Diatoms are the chief producers in the ocean. |
1. | Both (A) and (R) are True and (R) correctly explains (A) |
2. | Both (A) and (R) are True and (R) does not correctly explain (A) |
3. | (A) is True; (R) is False |
4. | (A) is False; (R) is True |