BIOLOGY                                                                                 Time Allowed(3:00)hour
(1) State TRUE or FALSE to the following statements. Do not copy the statements. (20 Marks)

(i)Region of differentiation lies above the root cap. (ii)Dodder (Shwe-new) is an example of a parasitic plant. (iii)The color, nectar and scent of flowers can attract insects for pollination. (iv)Aquatic plants make cross-pollination brought about by wind. (v) Dispersal of seeds promotes overcrowding. (vi) The seeds of Clematis are carried by wind. (vii) A small pore at one end of the micropyle of the bean seed is the hilum. (viii) Maize grain is germinated by epigeal method. (ix) The left kidney is a little anterior to the right in rabbit. (x)Duodenum is the anterior part of the large intestine. (xi) The rabbit’s lung are located in the abdominal region. (xii) The egg is more active than sperm in human. (xiii) Some plants having underground stems produce new plants. (xiv) Ginger grow from the nodes of tubers. (xv) Physical factors are also termed as biotic factors. (xvi) All animals and plants live in interdependence in an environment. (xvii) Carnivores are primary consumers. (xviii) Inspiration takes place when the ribs and the diaphragm return to their normal state . (xix) The diaphragm is concave towards the thorax when at rest. (xx) The presence of a true muscular diaphragm helps the efficiency of ventilation.

2. Complete the following statements with appropriate words. Do nor copy the statements. (20-marks)

(i) The leaf blade of the genus Nepenthes becomes ………………… into pitchers with lids. (ii) Saprophytes live upon ……………….. organ matter. (iii) Anther sacs are joined by a …………………… . (iv) Receptacle is the ……………… end of the pedical. (v) Coconut is dispersed by …………………… . (vi) Tomato and guava are ……………… fruits with many small seeds. (vii) The food for the growing embryo is stored in the ………………….. . (viii) A seed with one cotyledon is termed as ………………….. seed. (ix) Epiglottis is a ……………….. flap guarding the glottis. (x) The bile duct opens into the dorsal sides of the ……………………… . (xi) The mammalian lungs have a larger ……………………. surface area. (xii) In aerobic respiration, the ………………….. is completely oxidized to carbon dioxide and water. (xiii)Heat energy is released during …………………. of germinating seeds. (xiv) Aerobic respiration requires …………………….. while anaerobic respiration does not. (xv) Uterus is for the attachment and ……………….. of the embryo. (xvi) Vagina is also a …………….. canal for the baby in the female reproductive system . (xvii) The connection of the uterus and vagina is ……………………. . (xviii) Many animals and plants spend their lives in lightless …………………….. . (xix) Some algae and bacteria live in ……………………….. springs. (xx) Each …………………….. has a particular set of physical factors.

3. Answer ALL questions. (12-marks) (a) Give two reasons why dispersal of seeds is desirable. (b) Name the groups of mammals mentioning the one that constitute the majority. (c) Explain what is ment by autotrophic nutrition. (d) State how the seeds are treated before setting up the apparatus to demonstrate the release of energy during respiration. (OR) List the types of plasma proteins and blood cells as found in man. (e) Explain what you understand of phototropism. (OR) State the nature of lymph system.

(f) State the nature of ethylene as found in plant. (OR) Define primary and secondary consumer.

4. Answer ANY FOUR questions. (16-marks) (a) Provide labels and caption to the given diagram and state the process of given stage. (Do not copy the diagram)

(fig)

(b) Given the characteristics of mammals that are associated with respiration and reproduction. Respiration is only by lungs. (c) State the investigation to show that carbon-dioxide is necessary in the process of photo (OR) Tabulate the arteries that supply blood to the digestive system of the rabbit. (d) Explain the nature of uriniferous tubules as fond in the rabbit’s kidney. (OR) State the location and structure of the female reproductive organ of the flower. (e) Define the process of respiration and give an equation to summarize aerobic respiration. (OR) State the process of budding and cutting used in vegetative propagation.

5. Answer ANY FOUR questions. (32 Marks)

(a) State the locations and prominent features of cerebral hemispheres, diencephalon, optic lobes and cerebellum of rabbit’s brain.

(b) Explain the nature of parasitism and how epiphytes exist in an ecosystem.

(c)Explain in detail about gestation period.

(d) State the nature of dead spaces and how respiratory movements are controlled during gaseous exchange in mammals.

(OR)

State what occurs at the end of the experiment to desmonstrate the release of carbon dioxide and explain how to set up the experiment to show the anaerobic respiration in germinating seed.

(e) Give precise explanation on the nature of the inflorescence and its types as far as you can.

(OR)

State the nature of stem and leaf as found in a plant.

(f) Give a word diagram to show classification of fruit and explain about the types of fruit in which Polyalthia and jackfruits are given as an example.

(OR)

Explain about the external structure and internal structure of maize grain.