When the amount of food reserve is comparatively small, as it is in many marine invertebrates and mammals (in the latter the embryo is nourished by materials in the mother’s blood), the egg may be barely visible to the unaided eye. The egg of the sea urchin is about 75 microns (0.003 inch) in diameter; that of a human being is slightly more than 0.1 millimetre. Eggs are classified according to the amount of yolk present. An egg with a small quantity of evenly distributed yolk is called an oligolecithal egg. One with more yolk that is unevenly distributed (i.e., concentrated towards the vegetal pole) is telolecithal; and one with still greater amounts of yolk in granules or in a compact mass is megalecithal.
Record
Recording 00:00
Commenting has been turned off for this post.
Categorieën
- Home
- Wellness
- Theater
- Sports
- Shopping
- Religion
- Party
- Other
- Networking
- Music
- Literature
- Art
- Health
- Gardening
- Spellen
- Food
- Fitness
- Film
- Drinks
- Dance
- Crafts
- Causes
Read More
Couraging young minds
Courage to continue matters more than success or failier
Sustainable Development and Biodiversity Loss
Biodiversity loss is a major threat to sustainable development, as it undermines the health of...
Tiger conservation
Narendra Modi has confirmed that the population of tigers in India has grown significantly,...
"The Benefits of Learning a New Language"
Learning a new language offers numerous benefits that extend beyond mere communication.
1....
Seeds paper
Plantable seed paper on canvas is a wonderful idea! You can create stunning, eco-friendly art...
© 2024 GoSharpener Pvt.Ltd.
Refund and Cancellation policy - We do not entertain any refunds and cancellation Dutch
Refund and Cancellation policy - We do not entertain any refunds and cancellation Dutch