This set of practice questions will help to build your confidence in Ecology to face the real examination. Wa r+i,0 :Ba i,r-1 ,b e,vr t,3 ,i,! Which of the following is not a characteristic of Heliophytes? Due to modernization, we are destroying the ecosystem very quickly. Food supply population sizes or biomass in lower trophic levels and predators population sizes in higher trophic levels 3. Which one of the following is the most likely to happen? Instead, the cane toads reproduced remarkably rapidly and soon became out of control. Animals that consume both plant and animal matter are referred as: a. Only in tropical countries d.
An inverted pyramid of numbers happens when the densities of particular animals are not necessarily less than those of the plants that they eat. If you find any mistakes in my decision, you are welcome to point it out and it will be appreciated. Please take advantage of our , , , , and for your preparation. Free e-learning tutorial on habitat population and community test prep for class 8 science online tests with answer key. Low survival rate of progenies d. Ecology is a branch of biology which is involved in the study of the relationship between various organisms and their physical surroundings. Free science study guide for online learning to attempt multiple choice questions based test.
In a particular year, there are fewer ants in the population. It has sticky pads on its fingers and toes. The natural place where the organism or communities live is known as: a. Narrow distribution with high population size 4. The ability of a population of living species to increase under ideal environmental conditions is called: a.
Heliophytes and Sciophytes Psamphytes: Plants growing on sand 5. Lincoln index is used to measure: a. Long day and short night plants 6. What kind of growth is seen in populations that have reached their carrying capacity? Which one of the following adaptations helps it feed. Ecology Multiple Choice Questions and Answers 2 , ecology test 2 with answers to learn online elementary education courses.
The venomous cane toads are invasive species brought to Australia in hope of controlling their destructive cane beetle species. Nitrogen fixation fixes the nitrogen and plants are able to absorb it, then other species eat the plants and gets contained in their bodies. Answer Key and Explanations 1. Inhibition of growth of one species by another by producing toxins c. Pyramid of numbers deals with the number of a Species in area b Subspecies in a community c Individuals in a community d Individuals in a tropic level 9. A change in which of these factors is least likely to affect the distribution of moths? Species with wide geographical ranges which develop locally adapted populations are known as: a. Nitrification is when the decaying organic matter releases nitrate and nitrites that turns into ammonium, which seeps back into the soil.
The third way nitrogen gets cycled is denitrification - a chemical process that converts nitrates back into molecular nitrogen. There will be more birds surviving. Wide distribution with high population size 4. Inhibition of growth of one species by another by producing toxins 11. The amount of usuable energy form the sun and the supply of water, carbon and other essential nutrients.
Multiple choice questions Multiple choice questions are perhaps the easiest to complete you simply put a cross in a box, however, the questions often have two answers that could, at first glance, be correct. The dominant second trophic level, in a lake ecosystem, is a Benthos b Plankton c Zooplankton d Phytoplankton. Aerial photography and satellites show in vivid detail the results of laying waste to vast areas of forest and the harm done by poisons that humans have been pumping into the water and air during the century and a half since the beginning of the Industrial Revolution. If you leave it blank or tick two or more boxes you will get zero marks. There would be no effect on the number of crabeater seals. There will be more successful banana plants. Complete the food chain for these living things.
Answer key and explanations The answer key is prepared with best of my knowledge and all of them may not be correct. They live in trees in the rainforest and feed on small insects. Sample question 1 - Foundation Question What is the definition of a community? The sum total of the populations of the same kind of organisms constitute a colony b Genus c Species d Community 10. The energy flow in an ecosystem is: a. If it was inverted it would be impossible to pass up energy up because there would be almost no energy to begin with therefore making it inefficient. The number of crabeater seals would decrease. Vigorous flowering and fruiting 7.
There will be less successful banana plants. Long day plants Long day plants are also called as short night plants 6. Nitrogen from the atmosphere is fixed through nitrogen fixation or nitrification. The number of crabeater seals would increase. Altering the reproductive cycle of one organism by another 11. The percentage of oxygen and carbon dioxide in the atmosphere is: a. Plants which blooms when the light duration is more than 12 hours per day is known as: a.
These questions have been written by Bitesize consultants as suggestions to the types of questions that may appear in an exam paper. What happens to monkeys when the are put in an environment where it is 45 degrees celsius? In an , which one shows one way passage a Nitrogen b Carbon c Potassium d Free energy 3. These frogs are bright green with red eyes, blue stripes and orange feet. Dry subtropical grassland or savanna c. Stem with long inter-nodes Heliophytes are plants growing under direct sunlight. The pyramid of numbers shows the feeding relationships and the relative population sizes of organisms at each link in the food chain. .