It is called an ootheca (its the same for all insects)
there is around ten thousand to one hundred thousand spiders in the egg sac depending on the size of the spider
Vocal Sac
It sounds like you might have encountered a crab spider, specifically a mother spider carrying her egg sac. Crab spiders are known for their ability to change color to blend in with their surroundings. The egg sac you saw might appear mushroom-like in shape. It's best to observe from a distance and not disturb the spider as it cares for its eggs or young.
The pericardium is the sac surrounding the frog's heart.
in plants: the ovary holds the ovule which holds the archegonium (egg)
When a salmon egg hatches, the young is called an "alevin" . At this time it still depends on the yolk sac for nutrition. Between 5 or 10 weeks, the salmon is called a "fry" and begins to look like a typical fish in shape and colour. After several months, when the fish has developed its tiger-like markings, it is known as a "parr". Finally, after about 3 years, the parr ages into a "smolt", which is the last stage of life before typical adulthood
A baby salmon that still has its yolk sac is called a "fry." At this stage, the fry has absorbed the yolk sac, which provided essential nutrients during its early development. Fry are typically found in freshwater environments, where they begin to grow and develop further before transitioning to the next life stage.
The bubble in the egg is called an air sac, and helps prevent the egg from drying out (too quickly).
I think it's the Yolk Sac.
A kangaroo pouch is in fact also called a sac. Kangaroos will typically carry their young inside of these pouches.
The fluid-filled sac that covers the yolk in an egg is called the vitelline membrane. It acts as a protective layer and helps to maintain the yolk's shape and position within the egg.
the egg sac keeps the egg safe and pervides and it food for the egg
A spider begins its life in an egg sac. Once they hatch from the egg, spiders are called spiderlings. Spiderlings then molt to become adults.
The general term for a young fish is a fingerling.
Salmon La Sac in Washington is named after a local Native American term, which means "salmon at the place of the deer." The name reflects the area's rich natural resources and the significance of salmon fishing to the indigenous populations. The region was historically important for its wildlife and fishing opportunities, contributing to its unique name.
A praying mantis egg sac typically contains around 100 to 200 eggs.
Every single site I've looked (including the Britannica Encyclopedia) calls it an "egg sac".