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ONDO STATE BECE BASIC SCIENCE AND TECHNOLOGY OBJ AND ESSAY PAPERS

*BIOLOGY PRACTICAL ANSWERS* *(NUMBER 1)* (1ai) A - Microscope B - A ripe mango fruit C - Transverse section of a tomato fruit E - Maize grass (1aii) (i) Eye piece lens (ii) Objective lenses (iii) Stage (1aiii) Specimen A is used to study small organisms and cells in the laboratory. (1bi) https://i.imgur.com/I6C1zkI.jpg[/img (1bii) Specimen B is dispersed by animals (1biii) (i) it is edible (ii) it is brightly coloured (1biv) [Tabulate] *= Specimen B =* (i) One-sided (ii) Hardened woody endocarp *= Specimen C =* (i) Many-seeded (ii) Fleshy endocarp (1ci) [Tabulate] =Experiment= =Observation= - Spot becomes translucent =Conclusion= - Oil is present (1ci) Fats and oil is present in Specimen D (1cii) I. Specimen E is a source of carbohydrate for man ================================================== *(NUMBER 2)* (2ai) Specimen F - Carrot Specimen G - Irish Potato Specimen H - Water lily Specimen I - Prawn (2aii) Vitamin A in specimen F helps to maintain healthy eyes, teeth, skeletal and soft tissue, mucus membranes and skin. (2aiii) It has a swollen root (2aiv) In a tabular form: Experiment. Observation: G turns blue black in colour. Conclusion: Starch is present. (2bi) 1. Presence of long petiole which supports the broad lamina on the surface of the water. 2. The upper surface of the leaf is waxy which prevents the clogging of the stomata. 3. Presence of well developed and numerous adventitious roots which anchors the plant firmly 4. Flowers are raised above water surface by long stalks for purpose of pollination. (2bii) Specimen I belongs to the class of Crustacea. (2biii) 1. It has two body regions. 2. It has a pair of antennae. (2biv) In a tabular form: External feature: 1. Pair of antennae 2. Pair of legs 3. Stalked compound eyes. Function: 1. For feeling 2. For walking 3. For sight (2bv) (i) It serves as food for man (ii) It serves a source of income ============================================================ *(NUMVER 3)* *Complete number 3 Biology practical answer* (3a) J; Tilapia Fish. K; Tadpoles L; spider (3aii) (i)it both possess operculum (ii)it both possess eye (iii)it both possess mouth (3aiii) Tabulate Under J; (i) present of dorsal fin (ii) absence of spiracles Under K; (i) absence of dorsal fin (ii) present of spiracles (3bi) [img]https://i.imgur.com/FTyg1sh.png[/img] (3bii) (i)It has fins that help it swim in water. (ii)It has gills that help it breath in water. (3ci) (i)Head (ii)Cephalothorax (3cii) Arachnida (3ciii) (i)presence of wings (ii)presence of book lung *==============================* *_Completed!_* _*SOLVED BY EAGLE EYE CEO THE BEST EXAMS ASSISTANCE*_ _*CONTACT US:@+2348023343546*_ ➖

BIOLOGY PRACTICALS SOLUTIONS 🔥🔥✅

BIOLOGY PRACTICALS QUESTIONS PAPERS 👇👇

*NECO AGRIC. SCIENCE PRACTICAL SOLUTIONS* (1a) Specimen A - Hand fork Specimen B - Dibber Specimen C - Cross staff Specimen D - Cast net Specimen E - Feeding trough (1b) Specimen A - It is used for loosening surface soil around seedlings Specimen B - It is used in harvesting of root crops like yam Specimen C - It is used to measure angles and altitudes Specimen D - It is used for catching fish Specimen E - It is used to place food for animals (1c) Store in a cool and dry place (1d) (i) Lead weights (ii) Hand line (1e) (i) Keeps the environment clean and clear of feeds (ii) Keeps animal food clean and within reach ====================================================== (2a) Specimen F - Loamy soil Specimen G - Clayey soil Specimen H - Sandy soil Specimen I - Earthworm Specimen J - Termite (2b) (i) It contains perfect amount of each type of soil and humus which is necessary to provide nutrients for growth. (ii) Loamy soils are easily worked or cultivated in both dry and wet forms (iii) It is well aerated (2c) (i) Specimen G is fine grained while H is coarse (ii) G is light brown in colour while H is white (2d) (i) Soil organic matter (ii) Soil texture (iii) Soil pH (2e) (i) Use of chemicals and pesticides (ii) Use of termite baits ============================================================= (3a) K - Grass hopper L - Bean Weevil M - Mealybug (3b) K - Biting and chewing L - Boring M - Sucking (3c) K - Maize L - Bean M - Mango (3d) (i) Eats leaves and results in reduced yield of crops (ii) Renders seed unviable for planting (iii) Sucking of plant sap result in yellowing leaves, stunting or death of plants (3e) (i) Chemical control using insecticides (ii) Cultural control eg using resistant varieties (iii) Physical control eg hand picking of insects and larvae ========================================================= (4a) N - Animal skin O - Tick P - Roundworm (4b) (i) It is used as a raw material for clothes (ii) It serves as a source of food (4c) (i) It has four pairs of jointed in walking legs (ii) The moth parts are hidden in a groove (4d) (i) Inflicts wounds that attracts flies (ii) It causes irritation (4e) O (i) Cattle (ii) Dog P (i) Pig (ii) Sheep (4f) (i) Regular deworming with piperazine drugs (ii) Provision of clean and pure water _*SOLVED BY EAGLE EYE CEO THE BEST EXAMS ASSISTANCE*_ _*WHATSAPP US @+2348023343546*_

BIOLOGY PRACTICALS QUESTIONS PAPERS

AGRICULTURE PRACTICALS QUESTIONS PAPERS

*AKWA-IBOM PROMOTION EXAM* *PHYSICS JOINT* ➖➖➖➖➖➖➖➖➖ *SOLUTIONS* ➖➖➖➖➖➖➖➖➖

01-10: BDCCCABADA
11-20: BCBCDADACD
21-30: CBBDDCDBDA
31-40: ADDABACBDC
41-50: ADDDDBBDAC

➖➖➖➖➖➖➖➖➖ *COMPLETED* . ➖➖➖➖➖➖➖➖➖ ========================================================== *Instructions:* _Answer number one and any other two of your choice_ ========================================================== (1a) Time of flight T = 2uSin∅ --------------- g T= 2x250xSin30 --------------------- 10 T= 50 X 0.5 T= 25Sec (1b) At maximum height, speed, vx = Ucos∅ vx = 250 cos 30 = 216.5 ms-1 ========================================================== (3a) Diffusion is the tendency of molecules to migrate and fill an empty space due to their random thermal motions. (3b) [PICK ANY TWO] i. Difference in concentration affects the rate of diffusion. ii.The greater the concentration gradient, the quicker diffusion takes place. ... iii. The temperature affects the rate of diffusion. ... iv. The surface area of the membrane affects the rate of diffusion. ... V. Distance. (3c) Electroplating is process of continue flow of ions, which is not possible in Alternating current(due to changing in polarity very frequently) so the continue deposition of cation not occurs. OR This electric field comes from a DC supply connected to the electrodes. With AC, there will be no net ion flow and no plating will happen because the electric field direction will keep alternating and ions will oscillate back and forth within the electrolyte. ========================================================== (5a) A projectile is any object thrown into space upon which the only acting force is gravity. The primary force acting on a projectile is gravity. This doesn't necessarily mean that other forces do not act on it, just that their effect is minimal compared to gravity. (5b) Examples of Projectile in every Day Life (i) Firing a Canon (ii) Throwing a Basketball in the Basket (iii) Sneezing (iv) Javelin Throw (v) Archery (vi) Water Escaping a Hose (vii) Car and Bike Stunts (viii) Golf Ball (ix) Disc Throw (x) Gun Fire ========================================================== Completed✍️✅

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PVS SOLUTIONS