MCQ
Firstly kidneys are present as excretory organ in
- ✓Hemichordata
- BChordata
- CEchinodermata
- DMollusca
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| List $I$ | List $II$ |
| $A$. $P$-wave | $I$. Beginning of systole |
| $B$. $Q$-wave | $II$. Repolarisation of ventricles |
| $C$. $QRS$ complex | $III$. Depolarisation of atria |
| $D$. $T$-wave | $IV$. Depolarisation of ventricles |
Choose the correct answer from the options given below :
($i$) Loose connective tissue contains fibroblasts, macrophages and mast cells.
($ii$) Adipose tissue is a type of dense connective tissue located mainly beneath the skin.
($iii$) Tendons and ligaments are examples of dense connective tissue.
($iv$) Cartilage $\&$ bones are types of specialized hard connective tissue.
| Column - I | Column - II |
| A. Law of segregation | I. Testis determining factor |
| B. Gene mutation | II. 2n+1 |
| C. Y-chromosone | III. Drosophila |
| D. Trisomy | IV. Base pairs substitution assortment |
| E. Incomplete dominance | V. Antirrhinum sp. |
| F. Dihybrid cross | VI. 2n-2 |
| A | B | C | D | E | F | |
| (a) | II | IV | I | VI | III | V |
| (b) | IV | II | I | VI | III | V |
| (c) | II | IV | I | VI | V | III |
| (d) | IV | II | I | VI | III | V |