============================== NOTE: maths day won't be free, start gathering your N500 Mtn Recharge cards now, don't call our lines to give us excuses, We'll post answers very early that day, we'll post it to our users who as subscribed Make sure u don't send us N100 recharge cards into 5 places cos we won't load them and we won't send u link and password, it's either u load the card and transfer it to us (08166870771) or u buy only N500 Mtn once and send to us And to those sending us wrong recharge cards, Stop it, it's not a good attitude, And also to those saying that they don't sale Mtn recharge cards in their area, you have from now till your maths exam date to go and look for where to get Mtn N500 Airtime and keep, Bio-OBJ 1dcdacaccdc 11ccbdadbbcd 21dcbdddbacb 31cdabbbbddb 41dbcaabadbc (1a) -Single/independent free living organism eg amoeba -As a colony eg volvox -As a filament eg spirogyra (1b) -Amoeba -Volvox -Spirogyra (1ci) -Plant cell are rectangular in shape while Animal cell are spherical in shape -Plant cell contain chloroplast while animal cell do not contain chloroplast -Plant cell contain cell wall while animal cell do not contain cell wall -Plant cell nucleus is at the side while the animal cell is at the middle (1cii) -They both have nucleus -They both have mitochondrion -They both have endoplasmic reticulum ======================================== (2a) Mouth,Oesophagus,Stomach,Duodenum,Small intestine,Caecum,Appendix,Large intestine,Rectum,Anus (2bi) TABULATE Alimentary canal of birds|Alimentary canal of man -There is presence of crop|Crop absent -There is presence of proventiculus|Proventiculus absent -There is presence of gizzard|Gizzard is absent (2bii) -Both have caecum -Both have Oesophagus -Both have duodenum (2c) Herbivore posses heterodant type of dentition in which they posses teeth of different shapes and sizes.Herbivores feed mainly on vegetable hence its teeth is 28 in numbers.Its incisors are flat with sharp cutting edges for cutting vegetables or grasses .canine is absent.the space creates due to absense of the canine is called diastema. Diastema allows manipulation of grasses in the mouth.It has a very large molar and premolar closely packed and have very large ridged surface area for cutting and grinding 2d) -They help in regulation of blood sugar by producing insuling and glucagon -They help in digestion ====================================== (3ai) A habitat comprises of an organism immediate environment or where it lives or resides 3ai A habitat is an ecological or environmental area that is inhabited by a particular species of animal, plant, or other type of organism. 3ai A habitat is an ecological or environmental area that is inhabited by a particular species of animal, plant, or other type of organism. (3aii) -They help in the decay of the organisms -They also help to return certain substances like gases eg Nitrogen to the atmosphere thereby regulating certain biological processes such as the Nitrogen cycle,carbon cycle -Some of the substances released are important in processes such as respiration,photosynthesis (3b) Energy flows basically from the producers in a fresh water habitat to the consumers.The producers usually are phytoplanktons which are taken up by the primary consumers usually small fishes. The primary consumer are taken up by the secondary consumers which are larger fishes such as sharks.This sharks may inturn be taken up by man which is the tertiary consumer SCHEMATIC DIAGRAM Phytoplanktons->Small fishes->Sharks->Man (3c) -They causes diseases such as rice smut,black pod of cocoa which may lead to waste -They also reduce the economic value of plants leading to financial loss (3cii) -They help in fermentation of certain substances like yughourt eg lactobacillus species -They help in decomposition and decay of substances eg sprophytic micro organism -They causes diseases eg smallpox and chicken pox hence have been useful tools in the development of antibiotics and vaccines -They are useful in certain biological processes eg photosynthesis -They are used in sewage treatment -Sources of enzymes ====================================== 6a) -Tactic movement movement is found in some plant and animals while nastic movement is found in plants alone -Tactic movement rsponse to directional stimuli while nastic movement respond to non directional stimuli 6bi) -Euglena -Chlamydomonas 6bii) -Mimosa plant -Sunflower 6ci) -Regular cleaning -Exposure to fresh air -Eating balanced diet -Regular exercise 6cii) -Temperature -pressure -Pain -Cold 9) i) Single independent free living organism. Eg. Amoeba ii) As a colony. Eg. Volvox iii) As a filament. Eg. Spirogyra i) Amoeba ii) Volvox iii) Spirogyra C)Plant cell i) They are rectangular in shape ii) They contain chloroplast iii) The contain cell wall iv) The nucleus is at the side Animal Cell i) They are spherical in shape ii) They do not contain chloroplast iii) They do not contain cell wall iv) The nucleus is in the middle II) i) They both contain nucleus ii) They both have mitochondria iii) They both have endoplasmic reticulum
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