Reptiles are described by the presence of epidermal scales and cornified skin. They don't have an outside ear. They are for the most part earthly and creep or slither. They are poikilothermic and oviparous creatures.
1. Find the correct statement about class Reptilia
(a) dry and cornified skin, epidermal scales and absence of external ears
(b) marine habitat, endoskeleton is cartilaginous and have placoid scales
(c) fresh-water habitat, bony endoskeleton and air-bladder for buoyancy
(d) moist skin and body is devoid of scales, the ear is represented by the tympanum
2. Reptilian ancestry of birds can be indicated by
(a) Eggs with the calcareous shell
(b) four-chambered heart
(c) scales on their hindlimb
(d) presence of crop and gizzard
3. Find the correctly matched pairs
(i) Sea Urchin – parapodia
(ii) Obelia – Metagenesis
(iii) Crocodile – four-chambered heart
(iv) Lemur – thecodont
(a) (ii), (iii) and (iv)
(b) only (i) and (ii)
(c) (i), (iii) and (iv)
(d) only (i) and (iv)
4. Uricotelism is found in
(a) frogs and toads.
(b) birds, land reptiles and insects
(c) mammals and birds
(d) fish and freshwater protozoans
5. Most reptiles are
(a) ammonotelic
(b) ureotelic
(c) ureotelic over land
(d) uricotelic
6. Animals that get most affected by the change in the environmental temperature are
(a) aquatic
(b) homeothermic
(c) poikilothermic
(d) desert living
7. Bones of the reptiles are covered by
(a) Keratin
(b) Chitin
(c) Calcium
(d) none of the above
8. Which of the following is a living fossil?
(a) Dinosaurs
(b) Snakes
(c) Tuatara
(d) Lizards
9. The respiratory organ in reptiles is
(a) gills
(b) epidermis
(c) skin
(d) lungs
10. Find the correctly matched pair without any exceptions
(a) Chondrichthyes- cartilaginous endoskeleton
(b) Reptilia- 3 chambered heart with undivided ventricle
(c) Mammalia- viviparous
(d) Chordata- have mouth with a lower and upper jaw
Answer
| 1. (a) | 2. (c) | 3. (a) | 4. (b) | 5. (d) |
| 6. (c) | 7. (a) | 8. (c) | 9. (d) | 10. (a) |
Creature cells are eukaryotic cells without a cell divider yet have a valid, film bound core notwithstanding other cell organelles. They show the presence of DNA inside the core. Creature cells contain organelles and cell structures that are capable to complete devoted capacities needed for the appropriate working of the cell.
1. Name the non-membrane bound organelle exclusively found only in animal cell
(a) Sphaerosome
(b) Glyoxisome
(c) Centriole
(d) Peroxisome
Answer: (c)
2. If the centromere is located at the proximity of the end of a chromosome, it is known as
(a) Acrocentric
(b) Metacentric
(c) Telocentric
(d) Submetacentric
Answer: (a)
3. Flagella, centrioles, cilia and basal bodies possess evident similar structural elements and arrangements. This can lead to this probable hypothesis
(a) Loss of basal bodies should lead to loss of all cilia, flagella, and centrioles
(b) Disruption of one of these types of the structure should necessarily disrupt each of the others as well
(c) Natural selection for motility must select for microtubular arrays in circular patterns
(d) Motor proteins such as dynein must have evolved before any of these four kinds of structure
Answer: (c)
4. In the plasma membrane of a few animals, the presence of cholesterol
(a) makes the membrane less flexible permitting it to sustain greater pressure from within the cell
(b) enables the membrane to stay fluid more easily when the temperature of the cell drops
(c) enables the animal to remove hydrogen atoms from saturated phospholipids
(d) enables the animal to add hydrogen atoms to unsaturated phospholipids
Answer: (b)
5. Component of plant cell absent in animal cell is
(a) Cytoplasm
(b) Cell membrane
(c) Cell wall
(d) Nucleus
Answer: (c)
6. The association of more than one ribosome with a single molecule of mRNA complex is known as
(a) Polysome
(b) Polypeptide
(c) Polymer
(d) Polysaccharide
Answer: (a)
7. This cell organelle is responsible to extract energy from carbohydrates to form ATP
(a) Mitochondrion
(b) Lysosome
(c) Ribosome
(d) Chloroplast
Answer: (a)
8. Balbiani rings are the sites of
(a) RNA and protein synthesis
(b) Lipid synthesis
(c) Nucleotide synthesis
(d) Polysaccharide synthesis
Answer: (a)
9. This organism is not an example of eukaryotic cells
(a) Euglena viridis
(b) Escherichia coli
(c) Amoeba proteus
(d) Paramoecium caudatum
Answer: (b)
10. The main site of different types of cellular activities is
(a) Mitochondrion
(b) Nucleus
(c) Cytoplasm
(d) Plasma membrane
Answer: (c)
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