Statement I: Terrestrial ecosystems include forests, grasslands, and deserts.
Statement II: Aquatic ecosystems include ponds, lakes, wetlands, rivers, and estuaries.
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Both statements I and II are true.
Statement I: Terrestrial ecosystems include forests, grasslands, and deserts. — True. Terrestrial ecosystems are those on land. The book gives forest, grassland and desert as examples.
Statement II: Aquatic ecosystems include ponds, lakes, wetlands, rivers, and estuaries. — True. Aquatic ecosystems are those in water. The book gives pond, lake, wetland, river and estuary as examples. Crop fields and an aquarium are man-made ecosystems.
NCERT Extract:
Ecosystem – “… Many ecologists regard the entire biosphere as a global ecosystem, as a composite of all local ecosystems on Earth. Since this system is too much big and complex to be studied at one time, it is convenient to divide it into two basic categories, namely terrestrial and aquatic. Forest, grassland and desert are some examples of terrestrial ecosystems; pond, lake, wetland, river and estuary are some examples of aquatic ecosystems. Crop fields and an aquarium may also be considered as man-made ecosystems.”