1. D. Parental Material
2. C. Clay
3. B. Grassland
-Sasha
Answer: True
Explanation:
Crustaceans are the group of organism that live in water and on land as well for sometime. The Branchiopoda is the sister group of hexapoda.
The Branchiopoda is a class of Crustaceans which is the sister of hexapoda. There are many investigations going on to know which class of crustaceans is closest to the hexapoda.
But there is no such confirmation but till date the research and investigations suggest that the Crustaceans are group of hexapoda.
The red-legged frog breeds in ephemeral ponds from January through March. Its relative, the bullfrog, breeds in permanent ponds from late March through May. There are two pre-mating isolation mechanism at play here,
1. Ecological isolation: The habitats are different, hence the individuals of both the species do not meet. Ephemeral ponds are temporary ponds that develop during rainy days, while the permanent ponds are full of water throughout the year.
2. Temporal isolation: The time of mating is different for both the species to avoid contact between the individuals of closely related species. Red-legged frogs mate in January to March slot and the bullfrog in the March to May slot.