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.
Categories
- Home
- Wellness
- Theater
- Sports
- Shopping
- Religion
- Party
- Other
- Networking
- Music
- Literature
- Art
- Health
- Gardening
- Games
- Food
- Fitness
- Film
- Drinks
- Dance
- Crafts
- Causes
Read More
Solar Energy and Electric Vehicles
The integration of solar energy with electric vehicles (EVs) is revolutionizing sustainable...
Jammu and Kashmir
Jammu and Kashmir (abbreviated J&K) is a region administered by India as a union territory...
Bird
**The Fascinating World of Birds: Nature's Aerial Marvels**
Birds are some of the most...
Facts about insects
Here are some fascinating facts about insects:
1. *Diverse and abundant*: Insects make up...
Wildlife
Saving the wildlife today is saving the tomorrow world
© 2024 GoSharpener Pvt.Ltd.
Refund and Cancellation policy - We do not entertain any refunds and cancellation English
Refund and Cancellation policy - We do not entertain any refunds and cancellation English