do some seeds have no cotyledons?
http://en.wikipedia.org/wiki/Cotyledon
no
Yes, some seeds do not have cotyledons. These types of seeds are known as "non-endospermic" or "acotyledonous" seeds. In these seeds, the cotyledons, which are embryonic leaf structures that provide nutrients to the growing plant, are absent or greatly reduced.
To find out if a specific type of seed has cotyledons, you can do the following:
1. Research the plant species: Look up information about the plant species you are interested in. Botanical reference books, plant identification guides, or reputable online sources can provide valuable information about the characteristics of the seeds for various plant species.
2. Examine the seed: If you have access to the specific seeds you are studying, carefully observe them. Look for any structures that resemble leaves, as these would be cotyledons. Some seeds may have small, undeveloped cotyledons that are difficult to spot without magnification.
3. Consult botanical experts: If you are unable to find information about a specific seed, or if you are unsure about your observations, consider reaching out to botanical experts, such as botanists, horticulturists, or plant researchers. These professionals will have extensive knowledge in the field and can provide accurate information about different seeds and their characteristics.
Remember, the presence or absence of cotyledons can vary among different plant species, so it's important to research or consult reliable sources to get accurate information about specific seeds.