Question
a. Identify A. Which enzyme joined them?
b. Identify B. What is its function ?

b. Identify B. What is its function ?


a. A is Okazaki fragment. These fragments are joined by DNA ligase enzyme
b. B is RNA primer. It provides 3’ OH to which nucleotide gets attached by ester bond.
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| Hypohydrophily | Epihydrophily |
| 1. Porogamy | ————– |
| 2. ————– | Entry of pollen tube in Ovule piercing integuments |
| 3. ————— | Entry of pollen tube in Ovule through Chalaza |
Column I | Column II |
(1) Homologous organs | ————- |
(2) Analogous organs | ————- |
(3) Vestigial organs | ————- |
(4) Connecting links | ————- |
| Interactions | Species | |
| A | B | |
| 1. Neutralism – ………………….. | ||
| 2. Negative interactions ………………………… | ||
| 3. Positive interactions ……………………. | ||
| 4. Both positive and negative interactions ………………………….. | ||

| Chemical Substance | Category | Effect | Example |
| (1) NAA | _________ | Flowerininduced | _________ |
| (2)GA<sub>3</sub</p> | Gibberellins | __________ | Tomato, apple, pear |
| (3) Kinetin | _________ | Callus proliferation | __________ |
| (4) ABA | Abscisic acid | Induce bud dormancy | _________ |
| Partial pressure of gases | Alveolar air | Pulmonary, capillaries |
| $PPO_2$ | ————— | ————— |
| $PPCO_2$ | —————- | —————- |
| Column A | Column B |
| Macro elements | ——–, ———-, ——– |
| Micro elements | ——–, ———-, ——– |