What is true for photolithotrops
Obtain energy from radiations and hydrogen from organic compounds
Obtain energy from radiations and hydrogen from inorganic compounds
Obtain energy from organic compounds
Obtain energy from inorganic compounds
Photolithotrophs obtain energy from radiations (light) and hydrogen from inorganic compounds.
So, the correct statement is (B): Obtain energy from radiations and hydrogen from inorganic compounds.
| List I | List II |
|---|---|
| A. The Evil Quartet | III. Causes of biodiversity losses |
| B. Ex situ conservation | I. Cryopreservation |
| C. Lantana camara | II. Alien species invasion |
| D. Dodo | IV. Extinction |
Given below are two statements:
Statement I: The primary source of energy in an ecosystem is solar energy.
Statement II: The rate of production of organic matter during photosynthesis in an ecosystem is called net primary productivity (NPP).
In light of the above statements, choose the most appropriate answer from the options given below:

Match List I with List II:
| List I (Interaction) | List II (Species A and B) | ||
| A. | Mutualism | I. | +(A), O(B) |
| B. | Commensalism | II. | –(A), O(B) |
| C. | Amensalism | III. | +(A), –(B) |
| D. | Parasitism | IV | +(A), +(B) |
Choose the correct answer from the options given below:
List I | List II | ||
| A | Logistic growth | I | Unlimited resource availability condition |
| B | Exponential growth | II | Limited resource availability condition |
| C | Expanding age pyramid | III | The percent individuals of pre-reproductive age is largest followed by reproductive and post reproductive age groups |
| D | Stable age pyramid | IV | The percent individuals of pre-reproductives and reproductive age group are same |
Match List I with List II.
List I (Interacting species) | List II (Name of interaction) | ||
| A | Leopard and a Lion in a forest/grassland | I | Competition |
| B | A Cuckoo laying egg in a Crow’s nest | II | Brood parasitism |
| C | Fungi and root of a higher plant in Mycorrhizae | III | Mutualism |
| D | A cattle egret and a Cattle in a field | IV | Commensalism |
Choose the correct answer from the options given below
| List I | List II |
|---|---|
| A. The Evil Quartet | III. Causes of biodiversity losses |
| B. Ex situ conservation | I. Cryopreservation |
| C. Lantana camara | II. Alien species invasion |
| D. Dodo | IV. Extinction |
Given below are two statements:
Statement I: The primary source of energy in an ecosystem is solar energy.
Statement II: The rate of production of organic matter during photosynthesis in an ecosystem is called net primary productivity (NPP).
In light of the above statements, choose the most appropriate answer from the options given below:
Sum total of chemical reactions taking place in cells of the living organisms. All metabolic changes that take place in a form of multiple reactions and this follows a particular pathway called the metabolic pathway.
Pathways involve the extraction of energy by breaking down molecules and the energy is used to synthesize the building blocks. The process of metabolism occurs in two phases, namely anabolism and catabolism. The pathway in which a complex molecule is produced from simple molecules is called an anabolic pathway. For example, amino acids become proteins. The catabolic pathway is another metabolic pathway.