Third Term Examination
Class : SSS 2
Subject : Biology
Instruction : Answer all questions in Part A and follow the instructions in Part B.
SECTION A : OBJECTIVE QUESTIONS
1. A collection of petals is called ___________. (a) calyx (b) gynoecium (c) corolla (d) perianth
2. Flowers with both stamens and carpels are termed __________. (a) unisexual (b) irregular (c) dioecius (d) hermaphrodites
3. Which of the following structures is not essential in a wind pollinated flower? (a) anther (b) ovary (C) stigma (d) petal
4. ________ is the arrangement of seeds in a fruit. (a) fertilization (b) commensalism (C) placentation (d) pollination
5. The following are examples of drupes except _________. (a) apple (b) mango (c) coconut (d) palm fruit
6. Fresh water habitat include all the following except _______. (a) estuary (b) river (C) pond (d) puddle
7. Plants with breathing roots grow commonly in __________. (a) arid land (b) estuary (c) grassland (d) rain forest
8. Which of the following is not a dry indehiscent? (a) Achene (b) Follicle (C) Samara (d) Cypsela
9. In __________ germination, the cotyledon shoots above the soil surface. (a) Hypogeal (b) Hybridization (c) Epigeal (d) dominant
10. The following are methods of seed dispersal except _______. (a) Explosive mechanism (b) transpiration (C) wind (d) animals
11. Which of the following is not a dry dehiscent? (a) caryopsis (b) legumes (C) capsules (d) follicle
12. Which of the following is not a type of estuary? (a) tidal marshes (b) pandamus (C) river mouth (d) embayment
13. Trees in the mangrove have ___________. (a) sporophyte (b) gametophyte (c) oocytes (d) pneumatophore
14. Which of the following organs produces bile? (a) gall bladder (b) Pancrease (c) liver (d) stomach
15. The cell division responsible for the production of gametes is called ____________. (a) sporulation (b) mitosis (c) fragmentation (d) meiosis
16. In the mammalian tooth, the pulp cavity contains ________. (a) blood vessels (b) pulp (c) cement (d) pulp-like structure
17. The stomata of a leave perform the same function as the _________. (a) scale of fish (b) spiracle of insects (c) trachea of toad (d) pharynx of man
18. An aquatic habitat that is not moving is ________. (a) benthic (b) netic (c) lotic (d) lenthic
19. The unique habitat created by mixing fresh and salt water is _________. (a) ocean (b) lake (c) brackish (d) river
20. Which of the following food substances is digested in the stomach? (a) protein (b) carbohydrate (c) fats and oil (d) vitamins
21. The savannahs is different from a rain forest by having trees _________. (a) with fire resistant thick back (b) with thin bark (c) with broad leaves (d) that are usually very tall
22. Density, mortality rate, birth rate are the factors that affect __________. (a) population (b) cover (c) habitat (d) dominance
23. Which of the following structures of the human body provides the best surface for absorption? (a) alveolus (b) oesophagus (c) stomach (d) skin
24. An adaptation to avoid overcrowding is __________. (a) dispersal of seed (b) territorial behavior (c) life cycle and lifespan (d) predation
25. A climax community is characterized by ______________. (a) different species occurring at different times (b) constant changes in the appearance of the habitat (c) rapid changes in the composition of species (d) a stable composition of plants and animal species
26. Terrestrial plants exchange gases through the following except ____________. (a) lenticels (b) root cells (c) stomata (d) chloroplast
27. Which of the following environmental factors is not in a terrestrial habitat? (a) Temperature (b) sunlight (c) humidity (d) turbidity
28. Breathing roots are characteristics structure of plants growing in _____________. (a) mangrove swamp (b) desert (c) savannah (d) shrub biome
29. Which of the following is not classified as a terrestrial habitat? (a) forest (b) Afro alpine (c) littoral zone (d) Guinea savannah
30. The term afforestation is used in describing ____________. (a) felling of trees in the forest (b) Harvesting of natural forest resources (c) planting trees of value to man (d) fallowing of forest land
31. Which part of a gill of a fish is involved in gaseous exchange? (a) gill scale (b) gill bets (c) gill filament (d) gill slits
32. Which of the following limiting resources is competed for by osmosis in the desert? (a) temperature (b) oxygen (c) light (d) water
33. The cell division responsible for growth is called ___________. (a) conjugation (b) meiosis (c) mitosis (d) binary fission
34. The tiny pore on the leaves are called ___________. (a) wax (b) stomata (c) suberin (d) lenticels
35. The movement of diaphragm is characteristics of gaseous exchange in ___________. (a) insects (b) fish (c) toad (d) mammals
36. Which of these food chain is not possible in a forest?
(a) leaves – – > caterpillar–> bird – – – > lion (b) diatom – – > fly – – > toad – – > snake (c) fly – – > toad – – > snake – – > hawk (d) leaves – -> antelope – – > man – – > lion
37. Natality is a factor affecting population density because it involves ________________. (a) the number of mature females in the population (b) increase in population due to immigration (c) the number of all young ones produced in the population (d) increase in population due to emigration
38. Which of the following is not an example of plants found in marshes? (a) Sedges (b) water Lillies (c) cassythra (d) sword grasses
39. A chain of events in which one community is replaced gradually by one another in an orderly manner is __________. (a) population (b) estuary (c) ecosystem (d) succession
40. Which of the following is an aquatic habitat? (a) desert (b) ocean (c) force (d) grassland
41. Floating plants are called ________. (a) zooplankton (b) newton (c) phytoplankton (d) benthorns
42. The distribution of organisms in a fresh water habitat like a stream or pond is determined by the following except ________. (a) rainfall (b) temperature (c) pH of soil (d) light penetration
43. Plants found in the aquatic habitat are generally referred to as __________. (a) epiphytes (b) xeroohytes (c) halophytes (d) hydrophytes
44. Which of these factors are common to both aquatic and terrestrial habitat? (a) light, temperature and tide (b) rainfall, turbidity and salinity (c) light, rainfall and turbidity (d) rainfall, turbidity and salinity
45. Which of the following is not an aquatic habitat? (a) Estuaries (b) swamp (c) ponds (d) rainforest