| 1701 |
Which of these is a man-made ecosystem? |
Biology/Biological Studies/Biotechnology/Biochemistry
Structure and function of ecosystems |
Easy |
| 1702 |
In a pond, decomposers such as fungi and bacteria are most abundant |
Biology/Biological Studies/Biotechnology/Biochemistry
Structure and function of ecosystems |
Medium |
| 1703 |
Which statement about the functioning of an ecosystem is correct? |
Biology/Biological Studies/Biotechnology/Biochemistry
Structure and function of ecosystems |
Medium |
| 1704 |
A student sets up a sealed glass aquarium with water plants, snails and microbes and keeps it in the dark for… |
Biology/Biological Studies/Biotechnology/Biochemistry
Structure and function of ecosystems |
Hard |
| 1705 |
Net primary productivity is equal to |
Biology/Biological Studies/Biotechnology/Biochemistry
Productivity and decomposition |
Easy |
| 1706 |
The dark, amorphous, nutrient-rich substance formed during decomposition that is very resistant to microbial … |
Biology/Biological Studies/Biotechnology/Biochemistry
Productivity and decomposition |
Easy |
| 1707 |
A grassland has a gross primary productivity of 1500 kcal m⁻² yr⁻¹, and the plants lose 400 kcal m⁻² yr⁻¹ in … |
Biology/Biological Studies/Biotechnology/Biochemistry
Productivity and decomposition |
Medium |
| 1708 |
During decomposition, water-soluble nutrients move down into the soil and get precipitated as unavailable sal… |
Biology/Biological Studies/Biotechnology/Biochemistry
Productivity and decomposition |
Medium |
| 1709 |
Leaf litter from two trees is left on the forest floor. Litter X is rich in lignin; litter Y is rich in nitro… |
Biology/Biological Studies/Biotechnology/Biochemistry
Productivity and decomposition |
Hard |
| 1710 |
Approximately what fraction of photosynthetically active radiation is captured by plants? |
Biology/Biological Studies/Biotechnology/Biochemistry
Energy flow |
Easy |
| 1711 |
The food chain that begins with dead organic matter is called |
Biology/Biological Studies/Biotechnology/Biochemistry
Energy flow |
Easy |
| 1712 |
The mass of living material present at a trophic level at a particular time is called |
Biology/Biological Studies/Biotechnology/Biochemistry
Energy flow |
Medium |
| 1713 |
Producers in a grassland fix 20,000 J of energy. Using the 10 per cent law, how much energy reaches the secon… |
Biology/Biological Studies/Biotechnology/Biochemistry
Energy flow |
Medium |
| 1714 |
Food chains in nature rarely have more than four or five trophic levels. The main reason is that |
Biology/Biological Studies/Biotechnology/Biochemistry
Energy flow |
Hard |
| 1715 |
Which ecological pyramid is always upright, whatever the ecosystem? |
Biology/Biological Studies/Biotechnology/Biochemistry
Ecological pyramids |
Easy |
| 1716 |
The pyramid of biomass in a sea is generally inverted because |
Biology/Biological Studies/Biotechnology/Biochemistry
Ecological pyramids |
Easy |
| 1717 |
A single large tree supports thousands of caterpillars, which are eaten by a few birds. The pyramid of number… |
Biology/Biological Studies/Biotechnology/Biochemistry
Ecological pyramids |
Medium |
| 1718 |
Which is a limitation of ecological pyramids? |
Biology/Biological Studies/Biotechnology/Biochemistry
Ecological pyramids |
Medium |
| 1719 |
In an ecosystem, the energy available is 10,000 J at the producer level. Assuming 10 per cent transfer, what … |
Biology/Biological Studies/Biotechnology/Biochemistry
Ecological pyramids |
Hard |
| 1720 |
Variation in the concentration of reserpine in Rauwolfia vomitoria growing in different Himalayan ranges is a… |
Biology/Biological Studies/Biotechnology/Biochemistry
Biodiversity: concept and patterns |
Easy |
| 1721 |
The rivet popper hypothesis, which compares species in an ecosystem to rivets in an aeroplane, was proposed by |
Biology/Biological Studies/Biotechnology/Biochemistry
Biodiversity: concept and patterns |
Easy |
| 1722 |
In the species–area relationship log S = log C + Z log A, the value of Z for very large areas such as whole c… |
Biology/Biological Studies/Biotechnology/Biochemistry
Biodiversity: concept and patterns |
Medium |
| 1723 |
Which is NOT one of the standard explanations for the high species diversity of the tropics? |
Biology/Biological Studies/Biotechnology/Biochemistry
Biodiversity: concept and patterns |
Medium |
| 1724 |
An ecologist finds that a grassland plot with 16 plant species shows much smaller year-to-year changes in tot… |
Biology/Biological Studies/Biotechnology/Biochemistry
Biodiversity: concept and patterns |
Hard |
| 1725 |
Which is considered the most important cause driving animals and plants to extinction? |
Biology/Biological Studies/Biotechnology/Biochemistry
Loss of biodiversity |
Easy |
| 1726 |
The introduction of the Nile perch into Lake Victoria led to the extinction of many species of |
Biology/Biological Studies/Biotechnology/Biochemistry
Loss of biodiversity |
Easy |
| 1727 |
Which animal became extinct mainly because of over-exploitation by humans? |
Biology/Biological Studies/Biotechnology/Biochemistry
Loss of biodiversity |
Medium |
| 1728 |
The Amazon rain forest is called the "lungs of the planet". Which human activity is a major threat to it? |
Biology/Biological Studies/Biotechnology/Biochemistry
Loss of biodiversity |
Medium |
| 1729 |
A plant species that depends on a single species of moth for pollination becomes extinct soon after the moth … |
Biology/Biological Studies/Biotechnology/Biochemistry
Loss of biodiversity |
Hard |
| 1730 |
Exploring molecular, genetic and species-level diversity to find products of economic importance is called |
Biology/Biological Studies/Biotechnology/Biochemistry
Conservation approaches |
Easy |
| 1731 |
The argument that every species has an intrinsic value even if it is of no economic use to humans is the |
Biology/Biological Studies/Biotechnology/Biochemistry
Conservation approaches |
Easy |
| 1732 |
A villager argues that a forest must be saved because it supplies firewood, fruits and medicinal herbs to his… |
Biology/Biological Studies/Biotechnology/Biochemistry
Conservation approaches |
Medium |
| 1733 |
Pollination of crops by bees and birds is cited as a reason for conserving biodiversity under which argument? |
Biology/Biological Studies/Biotechnology/Biochemistry
Conservation approaches |
Medium |
| 1734 |
Which statement correctly matches a conservation argument with its basis? |
Biology/Biological Studies/Biotechnology/Biochemistry
Conservation approaches |
Hard |
| 1735 |
Which of the following is an ex situ method of conservation? |
Biology/Biological Studies/Biotechnology/Biochemistry
In situ and ex situ conservation |
Easy |
| 1736 |
Species that are confined to a particular region and found nowhere else are called |
Biology/Biological Studies/Biotechnology/Biochemistry
In situ and ex situ conservation |
Easy |
| 1737 |
Which of the following biodiversity hotspots covers part of India? |
Biology/Biological Studies/Biotechnology/Biochemistry
In situ and ex situ conservation |
Medium |
| 1738 |
The Khasi and Jaintia Hills of Meghalaya are well known for |
Biology/Biological Studies/Biotechnology/Biochemistry
In situ and ex situ conservation |
Medium |
| 1739 |
A rare orchid survives only in a small forest patch that is about to be flooded by a dam. Which conservation … |
Biology/Biological Studies/Biotechnology/Biochemistry
In situ and ex situ conservation |
Hard |
| 1740 |
A factory produced its full target of 10,000 units on time, but used far more raw material than planned. What… |
Business Studies
Concept, objectives and importance of management |
Easy |
| 1741 |
Management is said to be an 'intangible force'. This means that |
Business Studies
Concept, objectives and importance of management |
Easy |
| 1742 |
A company in a backward district hires local people with disabilities and uses solar power in its plant. Whic… |
Business Studies
Concept, objectives and importance of management |
Medium |
| 1743 |
When the government changed packaging rules, a firm quickly redesigned its products and processes. Which feat… |
Business Studies
Concept, objectives and importance of management |
Medium |
| 1744 |
Which of the following is the best example of management being 'multidimensional'? |
Business Studies
Concept, objectives and importance of management |
Hard |
| 1745 |
Why is management called an 'inexact science'? |
Business Studies
Management as science, art and profession |
Easy |
| 1746 |
Which feature of a profession is NOT satisfied by management? |
Business Studies
Management as science, art and profession |
Easy |
| 1747 |
Two managers studied the same principles in college, but each solves employee problems in a different, creati… |
Business Studies
Management as science, art and profession |
Medium |
| 1748 |
A doctor or lawyer must belong to a statutory body that can punish misconduct, but a manager need not. This d… |
Business Studies
Management as science, art and profession |
Medium |
| 1749 |
Which statement best sums up the nature of management? |
Business Studies
Management as science, art and profession |
Hard |
| 1750 |
Which level of management is mainly responsible for setting the overall objectives and strategies of the orga… |
Business Studies
Levels of management |
Easy |