Identify the incorrect statement.
1. Sapwood is involved in conduction of water and minerals from root to leafs.
2. Sapwood is the innermost secondary xylem and is lighter in colour.
3. Due to deposition of tannins, resins, oils etc., heart wood is dark in colour.
4. Heart wood does not conduct water but gives mechanical support.
The transverse section of a plant shows following anatomical features :
(a) Large number of scattered vascular bundles surrounded by bundle sheath.
(b) Large conspicuous parenchymatous ground tissue.
(c) Vascular bundles conjoint and closed.
(d) Phloem parenchyma absent.
ldentify the category of plant and its part :
1. Monocotyledonous root
2. Dicotyledonous stem
3. Dicotyledonous root
4. Monocotyledonous stem
Cuboidal epithelium with brush border of microvilli is found in :
1. Ducts of salivary glands
2. Proximal convoluted tubule of nephron
3. Eustachian tube
4. Lining of intestine
Goblet cells of alimentary canal are modified from:
1. Columnar epithelial cells
2. Chondrocytes
3. Compound epithelial cells
4. Squamous epithelial cells
If the head of cockroach is removed, it may live for few days because:
| 1. | The cockroach does not have a nervous system. |
| 2. | The head holds a small proportion of a nervous system while the rest is situated along the ventral part of its body. |
| 3. | The head holds a third of the nervous system while the rest is situated along the dorsal part of its body. |
| 4. | The supra-oesophageal ganglia of the cockroach are situated in ventral part of abdomen. |
1. Peroxisomes
2. Golgi bodies
3. Polysomes
4. Endoplasmic reticulum
Which of the following statement about inclusion bodies IS incorrect ?
| 1. | These are involved in ingestion of food particles. |
| 2. | They lie free in the cytoplasm. |
| 3. | These represent reserve material in cytoplasm. |
| 4. | They are not bound by any membrane. |
Match the following:
| (a) | Inhibitor of catalytic activity | (i) | Ricin |
| (b) | Possess peptide bonds | (ii) | Malonate |
| (c) | Cell wall material in fungi | (iii) | Chitin |
| (d) | Secondary metabolite | (iv) | Collagen |
Choose the correct option from the following:
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (i) | (iv) | (ii) |
| 2. | (iii) | (iv) | (i) | (ii) |
| 3. | (ii) | (iii) | (i) | (iv) |
| 4. | (ii) | (iv) | (iii) | (i) |
Identify the substances having a glycosidic bond and peptide bond, respectively in their structure:
| 1. | Glycerol, trypsin | 2. | Cellulose, lecithin |
| 3. | Inulin, insulin | 4. | Chitin, cholesterol |
Identify the basic amino acid from the following:
1. Glutamic Acid
2. Lysine
3. Valine
4. Tyrosine
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