Biology Basics: How Animals Reproduce

Two types of two-parent reproduction (sexual) and two types of one parent reproduction (aseuxual) are seen in animals. It seems crazy to think that animals can reproduce with only one parent, but with more simple creatures like worms and jellyfish, it happens!

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Two-parents Reproduction

Two parent reproduction ensures genetic variation in each new offspring. This makes for unique traits of each young, and allows for greater protection from disease. However the animals must find a mate in order to have new babies. The two types of two-parent reproduction are live birth and eggs.

Birds are the first thing I think of when I think of animals laying eggs. But many other animals lay eggs, too. Reptiles, Amphibians, Fish, and many invertebrates lay eggs. In fact, only Mammals give live birth!

One-Parent Reproduction

Most animals that reproduce asexually are simple creatures like invertebrates, like worms, jellyfish, and sea stars.  Fragmentation and Budding can also be called cloning, because the offspring are identical to the parents. The advantage to asexual reproduction is that these animals can reproduce even if they cannot find a mate. However the offspring that are created have identical genetic information as the parent, and therefore one disease can kill off an entire population of cloned animals. They can also reproduce much quicker, but that means they can easily overpopulate and compete for resources.

These fascinating methods of reproduction make for some fascinating animal baby stories. Enjoy the PDF for more info!

LIfe Sciene Workbook

Enjoy illustrated lessons and playful quizzes on Animal Cells, Plant Cells, Classification of Living Things, Invertebrates & Vertebrates, Plant Identification, and more!

Another day at the superstore

Another day at the superstore. Screams. Running into traffic. Full body resistance to sitting in the shopping cart seat. So many things to complete in a day- errands, work, diapers, laundry, cleaning, dinner, dishes, and on, and on, and on it goes. And in the midst of these many tasks our children obediently, thoughtfully participate in the family life, by cleaning, caring, assisting, sharing, and generally being pleasant people.

Ha.

Granted sometimes our little ones are angels. So easy to love. But then there’s the other times. A lot of the time, there’s the cold, hard, reality of tactless humanity in the mix. And not just their tactless humanity. Because God knows, I am rarely a little angel.

So here I find myself in the superstore parking lot, starting sentences with phrases like “oh come on” and “get your butt…” and “I’m so sick of…,” and it goes downhill from there.

What a prime example I am for my kids.

Ha.

It was in the middle of one of those other times- the tactless humanity times. I finally loaded the car with superstore bags, because yes, I am one of those people who forgets all 50 of her save-the-planet-canvas bags at home. I completed my errand; success! Except one kid is now crying. One is sticking a tongue out. Another is bemoaning the existence of car seats. And I am angry. I am not exhibiting behavior worthy of replicating. Mom needs a timeout.  

In the midst of all this there was grace. Unmerited favor. Grace washes over me, and I hear a still small voice. It whispers to my knotted up heart.

Seek peace and joy first.

I was not seeking peace, I was seeking my to do list. I was not seeking joy, I was seeking adherence. I was not seeking peace, I was seeking “QUIET!!!!” I was not seeking joy, I was seeking “get along, already!” and “stop it!” and “hurry up!”

“Seek peace and joy first.”

I knew what it meant. It meant sacrificing perfection. It meant giving up on my agenda sometimes. It meant being content when things weren’t finished, to do lists went unchecked, and libraries get full funding for a new wing. It meant I would need to exhibit all the things I was expecting from my kids. Patience. Kindness. Self control. Love.

And what a trade off-- a clean house traded for a happy one; a vibrant tasty meal salted with tears traded for chicken nuggets with smiles; a carload of groceries and screams at 3pm for a carload of groceries and giggles at 4.

That’s the best deal on the planet. I’ll take that trade.