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What kind of nervous system is seen in Hydra, earthworm and cockroach?
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Complete the following chart:
| Cranial nerve number | Name | Type | Function |
| II | ______ | Sensory | ______ |
| V | Trigeminal | Touch, taste and jaw movements | |
| X | ______ | Mixed | ______ |
| XII | ______ | Motor | Movement of tongue |
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Write a short note on wetland.
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Which among the following cells in human has 23 chromosomes?
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What are A, B in the following table:
| Transgenic Crop | Substance | Transgene | |
| (i) | A | Flavonoids | Chalone isomerase |
| (ii) | Rice | B | Ferritin |
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Sketch and lable - Unfertilized egg.
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Match the following:
| Sr. No. | Column I | Column II | |
| (i) | Eutrophication | (a) | A soil erosion |
| (ii) | Biomagnification | (b) | carbon monoxide, methane |
| (iii) | Particulate pollutant | (c) | Prevention of extinction |
| (iv) | Conservation | (d) | Dust, smog |
| (v) | Gaseous pollutants | (e) | Accumulation of nonbiodegradable substances |
| (vi) | Deforestation | (f) | Death of aquatic ecosystem |
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Name the genes responsible for making Bt cotton plants resistant to bollworm attack. How do such plants attain resistance against bollworm attacks? Explain.
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Give an example of the source of thermostable enzyme DNA polymerase.
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Explain the concept of primary productivity.
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What is photorespiration?
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The biological scissor is ______.
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Give the applications of the PCR technique.
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Name two types of food chain.
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A collection of neuron cell bodies located outside the CNS is called _________.
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The bacterium which causes a plant disease called crown gall is _______________.
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In vitro amplification of DNA or RNA segment is known as ___________.
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The enzyme nuclease hydrolyses ______ of polynucleotide chain of DNA.
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The recognition sequence of restriction enzymes is generally ______ nucleotide long.
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