Environmental Asiignment No 1

2.

The natural place of an organism or community is known as

Habit
Habitat
Biome
Niche

Correct Answer

A. Habitat

Explanation

Habitat refers to the natural place where an organism or community lives. It includes the physical environment such as the climate, soil, and other abiotic factors, as well as the biotic factors like other species that coexist in the same area. A habitat provides the necessary resources and conditions for an organism to survive, reproduce, and carry out its normal activities. It is the specific location or area that is suitable for a particular species or community to thrive and fulfill their ecological roles.

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3.

Which statement is correct with respect to the food chain?

Every component of food chain forms trophic level
Inter-relation between different food chains is known as a food web
All the chains formed by nutritional relations is used to understand energy flow.
All of the above

Correct Answer

A. All of the above

Explanation

The statement "Every component of food chain forms trophic level" is correct because each organism in a food chain occupies a specific trophic level based on its position in the chain. The statement "Inter-relation between different food chains is known as a food web" is also correct because a food web is a network of interconnected food chains that shows the relationships between different organisms and their sources of food. Finally, the statement "All the chains formed by nutritional relations are used to understand energy flow" is correct because studying all the food chains helps in understanding how energy is transferred from one organism to another in an ecosystem.

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4.

Which is not the characteristic of a population?

Natality
Mortality
Stratification
Sex retio

Correct Answer

A. Stratification

Explanation

Stratification is not a characteristic of a population. Stratification refers to the division of a population into different social or economic levels or classes. It is a concept related to social sciences and not directly related to the characteristics of a population, such as natality (birth rate), mortality (death rate), or sex ratio (proportion of males to females in a population).

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5.

An orchid living on a tree exhibit

Predator
Parasite
Commensalism
Heterocytes

Correct Answer

A. Commensalism

Explanation

Commensalism is a type of relationship where one organism benefits while the other is neither harmed nor benefited. In the case of an orchid living on a tree, the orchid benefits by using the tree as a support structure to grow and access sunlight, while the tree is not affected by the presence of the orchid. Therefore, this relationship can be classified as commensalism.

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6.

Which is the renewable exhaustible natural energy resource?

Coal
Petroleum
Kerosene
Biomass

Correct Answer

A. Biomass

Explanation

Biomass is considered a renewable exhaustible natural energy resource because it is derived from organic matter such as plants, crop residues, and animal waste, which can be replenished through natural processes. It can be used for heating, electricity generation, and transportation fuel. Unlike coal, petroleum, and kerosene, which are fossil fuels and take millions of years to form, biomass can be continuously produced and utilized without depleting finite resources. Therefore, biomass is a sustainable and renewable energy option.

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7.

Which of the following requires maximum energy?

Secondary consumer
Primary producer
Primary consumer
Decomposer

Correct Answer

A. Primary producer

Explanation

Primary producers require the maximum energy because they are able to convert sunlight into chemical energy through the process of photosynthesis. They are at the bottom of the food chain and provide energy for all other organisms in the ecosystem. Secondary consumers, primary consumers, and decomposers obtain their energy from consuming other organisms, making them dependent on the energy stored in the primary producers.

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8.

“The pyramid of energy is always upright” states that

The energy conversion efficiency of herbivores is better than carnivores
The energy conversion efficiency of carnivores is better than herbivores
Producers have the lowest energy conversion efficiency
Energy conversion efficiency is the same in all trophic levels

Correct Answer

A. The energy conversion efficiency of herbivores is better than carnivores

9.

Plant species with a wide range of genetic distribution evolve into a local population known as

Ecotype
Population
Ecosystem
Biomass

Correct Answer

A. Ecotype

Explanation

Ecotype refers to a local population of a plant species that has evolved and adapted to specific environmental conditions within a particular geographic area. These populations develop distinct genetic characteristics, allowing them to thrive and survive in their specific habitat. The wide genetic distribution of plant species allows for the development of different ecotypes in various regions, each with unique traits suited to their local environment. Therefore, ecotype is the correct answer in this context.

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10.

The ability of a population to increase under ideal environmental conditions is called

Natality
Biotic potential
Carrying capacity
Absolute natality

Correct Answer

A. Natality

Explanation

Natality refers to the birth rate or the number of births in a population over a specific period of time. It represents the potential of a population to increase in numbers under ideal environmental conditions. This includes factors such as the availability of resources, absence of predators or diseases, and favorable climatic conditions. Natality is an important factor in determining the growth and expansion of a population.

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Environmental Asiignment No 1

In an ecosystem, the energy flow is always

Quiz Preview

The natural place of an organism or community is known as

Which statement is correct with respect to the food chain?

Which is not the characteristic of a population?

An orchid living on a tree exhibit

Which is the renewable exhaustible natural energy resource?

Which of the following requires maximum energy?

“The pyramid of energy is always upright” states that

Plant species with a wide range of genetic distribution evolve into a local population known as

The ability of a population to increase under ideal environmental conditions is called