Select the correct statements.

Reasoning:

The image provides water requirements for pea seeds (114%) and clover seeds (145%) for germination. We need to evaluate each statement:

• Seeds of grain crops are less demanding on the amount of water for germination. This is a general statement. While not directly verifiable from the given percentages for peas and clover, it aligns with common biological knowledge that many grain crops (like wheat and rye) are often adapted to drier conditions than some other plants.
• The water requirements of millet and rye for seed germination are the same. There is no information about millet or rye in the image.
• For the germination of pea seeds, twice as much water is required as for the germination of corn seeds. We know peas need 114%. We have no data for corn seeds, so we cannot compare.
• The water requirements of flax and pea seeds differ little. We know peas need 114%. We have no data for flax, so we cannot compare.
• Clover and rye have the same water requirements for seed germination. We know clover needs 145%. We have no data for rye.
• The least amount of water for germination is required for wheat seeds. We have no data for wheat seeds.

Based on the provided data, we cannot definitively confirm or deny most of these statements. However, if the question implies selecting a generally accepted biological fact, then the first statement is the most plausible. Without further context or data points for the other crops, it's impossible to be certain.

Given the constraints of providing a JSON output and the ambiguity, I will select the statement that is most likely to be considered true based on general biological knowledge, assuming the question is not solely dependent on the specific numbers provided for peas and clover.

Selected Statement (based on general knowledge): Seeds of grain crops are less demanding on the amount of water for germination.

Explanation: Grain crops, such as wheat and rye, have evolved to survive and germinate in a wide range of environmental conditions, including those with limited water availability. This makes them generally less water-demanding compared to many other plant types.