4. Why does enzyme activity decrease at higher temperature?
5. Where are 70S type of ribosomes found in eukaryotic cells?
6. Which technique is used for the separation of leaf pigments?
7. Sino Atrial Node is known as the pacemaker of the heart. Justify.
8. What is fascia?
9. Name the granular bodies found in the cell body of neurons.
10. An ovarian hormone is known to induce changes in the secondary
prepare for anticipated pregnancy. Name this hormone.
PART-B
I. Answer ANY FIVE of the following in 3-5 sentences each, where
11. Write any two commercial uses of algae.
12. Define the following terms:
i) Epiphyllous stamens ii) Staminode
13. What are the twin characters of growth?
Answers
Answer:
4-)due to denaturation of protein.
5-)in mitochondria and chloroplast.
6-)paper chromatography.
7-)sinus node generate electric impulse continously and maintain the rhythm of heart and hence known as natural pace maker.
8-)In skeletal system many muscles are held together tissue layer called fascia.
9-)Nissl body.
10-)progesterone is the hormone.
PART - B
11-) *algae is used in food ingredients.
* It is also used in dyes, fertilisers and pharmaceutical. etc.
12-) 1-)Epiphyllous stamens - when stamen are seen as arising from the perianth lobe, that stamen is known as Epiphyllous stamens.
2-)Staminode - a sterile on abortive stamen resembling a stamen without its anther.
13-) Increase in mass and increase in number are the twin character of growth.