How do adaptive radiation and homologous structures give evidence of evolution? In the mammalian menstrual cycle, the decline in the level of progesterone is due to a. They are too small to reproduce c. Use of metabolic water b. The size attained is expressed as percentage of total gain between birth and maturity 20 years. Inflicting severe effects on host c.
Which one of the following is true of diploid parthenogenesis? High concentrations of hydrogenase 4. Which one of the following water relations is not true about a plasmolysed plant cell? Suggest why i Seedlings of the same plant were used in the experiment ii The rate of release of oxygen was used to measure the rate of photosynthesis f. The most appropriate conclusion of the results is that a. Injection of thyroxine into a laboratory mammal would cause a. How does variation in pH of mammalian blood affect the ability of haemoglobin to associate with oxygen? How many chromosomes would a germinal epithelium cell within the ovary of the animal contain? Lack of milk in the diet has no effect on the growth of rats.
Reversing the normal stomatal rhytm c. Gains water by osmosis and extrudes salts 37. Under which of the following conditions would transpiration be most rapid? Reducing the number of stomata on their leaves. Which of the following does not play part in regulating the salt concentration of a mammalian blood? The eggs are formed by a. Metabolic rate to decrease c. Which one of the following ecological effects may not be caused by deforestation? Viruses can not reproduce outside a living cell because a.
Describe mechanisms which promote out-breeding in monoecious plants. Which one of the following mineral elements is not required by plants? In rats, normal growth occurs if the milk contains essential vitamins b. Figure 4 shows the oxygen dissociation curves at 2. Swallows water and extrudes salts d. What considerations must be made before application of a biological pest control method? The differences between a green plant and the iron bacteria in the synthesis or organic compound is that the a.
Which one of the following statements is true of first division of meiosis but untrue of mitosis? Bacteria drive their energy for the synthesis from oxidation of inorganic compounds. From the graph, state the i Differences in the effect of light intensity on the two groups of plants. Conversion of glucose into glycogen to increase d. Wings of a cockroach and a bat b. Which one of the following stages of photosynthesis uses light energy directly? Bacteria have a different kind of chlorophyll d. Loses water by osmosis and absorbs salts b.
Skeletons of a mouse and cray fish c. Which one of the following would speed up the process of diffusion? Which one of the following show divergent evolution? Parasiting more than one type of host d. Figure 1 shows the results of the experiment. Name two factors that may limit the rate of photosynthesis of plants previously grown in high light intensity, if subjected to light intensity above 25 arbitrary units. In an experiment to determine the factors affecting photosynthesis, seedlings of a plant were divided into two groups and grown under different light intensities.
On the same graph sketch oxygen dissociation curves for the lugworm and human if both organisms were subjected to same higher carbon dioxide tension. What properties do lipids possess as storage food substance? What is the importance of cyclic photophosphorylation in photosynthesis? Which one of the following characteristics of a parasite would increase its chances of survival? Nerve endings produce nor-adrenaline b. Please reach out incase of more inquiries. A green plant develops yellow leaves as a result of being deficient in a. Where in the plant cell does cyclic photophosphorylation occur? Which part of an Amoeba is concerned with active intake of water? How many of the seedlings were heterozygous? Which one of the following is not a form of imbreeding? Describe the trend of succession that would take place on a bare rock. Suggest explanations for the differences you have stated I i c. Preganglionic fibres are short c.
Reduction in soil fertility c. Am going to share a link with you for the papers we have so that you can get access to those as we update the last 3 years. Milk stimulates growth while lack of it retards growth in rats c. The chromosome number is maintained in the daughter cells b. What type of growth is exhibited in the figure? What is the role of the apical meristem in root growth? Source of hydrogen for the bacteria is not water c. Swallows water and absorbs salt c. Both the sodium and potassium ions diffuse into the axon 14.
Explain the position of the curves for the lugworm and pigeon in reference to that for human. Formation of phosphoglyceric acid 34. Figure 2 shows growth and curves of a rat provided with milk diet at different times. Outline the structural and physiological functions of lipids in living organisms. We currently do not have Computer Studies Past papers and solutions but we are in the process of getting them so please reach out to us in the next month to get them. State the ecological importance of adaptive radiation b. Preganglionic fibres are long 15.
Oxygen consumption to increase b. Describe the formation of secondary tissues in cotyledonous plants 5. Number of hair on the body c. When the plants were mature, their apparent rates of photosynthesis in milligrams of oxygen released per unit leaf area per hour were measured over a range of different light intensities. Homologous chromosomes come together at the equator 24.