Question
Draw a labelled diagram showing semi-conservative replication of DNA.
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Genetic Disorders
[Turner’s syndrome, Sickle-cell anaemia, Thalassemia, Edward’s syndrome, Klinefelter’s syndrome, Down’s syndrome]
[Turner’s syndrome, Sickle-cell anaemia, Thalassemia, Edward’s syndrome, Klinefelter’s syndrome, Down’s syndrome]
| Column A | Column B |
| (A) Autosomal disorder | —————– |
| (B) Sex chromosomal disorder | —————– |
| (C) Mendelian disorder | —————– |
| Type of Pollination | Agent | Kind of flowers | Example |
| 1. Anemophily | ------------ | Small, colourless, without nectar | Maize |
| 2.---------------------- | Bats | -------------------------------------------- | Adansonta |
| 3. Entomophily | ------------ | Large, showy, sweet smell with nectar | -------------- |
| 4--------------------- | Birds | Brightly coloured, large, showy, with dilute nectar | --------------- |
Enlist the names of following cranial nerves : III, W VI, XI
| Era | Dominating group of animals |
| 1. Coenozoic | ………………………………. |
| 2. ………………………………. | Reptiles |
| 3. Palaeozoic | ………………………………. |
| 4. ………………………………. | Lower Invertebrates |
Classify the given specific effects of different types of auxins in Column A and complete Column B with the examples.
(IAA, NAA, 2, 4-D, IBA, 2, 4, 5-T)
(IAA, NAA, 2, 4-D, IBA, 2, 4, 5-T)
| Column A | Column B |
| (1) Selective synthetic herbicide | ———— |
| (2) Seedless fruits | ———— |
| (3) Flowering in pineapple | ———— |
| (4) Synthetic auxin | ———— |
| (5) Agent orange | ———— |
a. Identify A and B in the following diagram.
b. Name the scientist who conducted this experiment.
b. Name the scientist who conducted this experiment.
| Waves on ECG | Heart Activity | Caused due to |
| P wave | Atrial contraction | —————- |
| QRS wave | —————– | Ventricular depolarization |
| T wave | —————– | Ventricular repolarization |
Classify the following:
i. Hairy leaves in wheat
ii. Nectar-less cotton having smooth leaves
iii. Hairy leaves in cotton
iv. Solid stem in wheat
i. Hairy leaves in wheat
ii. Nectar-less cotton having smooth leaves
iii. Hairy leaves in cotton
iv. Solid stem in wheat
| Resistance to insects | Morphological characters |
| Jassids | ———— |
| Cereal leaf beetle | ———— |
| Stem borers | ————– |
| Bollworms | ————— |
a. Identify A. Which enzyme joined them?
b. Identify B. What is its function ?
b. Identify B. What is its function ?