100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Summary Reproductive strategies of animals IEB & DBE life sciences Gr 12 notes $5.42   Add to cart

Summary

Summary Reproductive strategies of animals IEB & DBE life sciences Gr 12 notes

 10 views  0 purchase
  • Course
  • Institution

This set of notes contain a detailed explanations on the diversity of reproductive strategies of animals containing the following: Reproductive strategy types Courtship Fertilisation type Parental care Amniotic egg Precocial and altricial development Oviparous vs ovoviviparous vs vivipa...

[Show more]

Preview 2 out of 8  pages

  • October 24, 2022
  • 8
  • 2022/2023
  • Summary
  • 200
avatar-seller
Diversity of
reproductive
strategies

, Diversity of reproductive strategies
Reproductive strategies in animals
Ensure continued existence of species, successful reproduction is essential. Animals use
rvarious reproductive strategies to increase reproductive success in different environments.
Reproductive strategy: way species budgets energy expenditure to produce viable offspring.
Two main types of reproductive strategies:
r-strategy (concave curve)
K-strategy (convex curve)
r-strategy
Animals expend more energy in producing many offspring, but little in
parental care.
Many offspring die before adulthood, enough survive to continue species.
(Eg. leatherback turtles)
K-strategy
Animals produce fewer offspring, expend much energy for parental care.
Offspring have better chance of surviving to adulthood.
(Eg. elephants, lions).
Survivorship curves illustrate number of organisms survive at different stages of life span.
K- and r-strategy animals show distinctly different survivorship curves.
Reproductive strategies are discussed:
- Courtship - Ovipary, Ovovivipary & Vivipary - Amniotic egg
- External & Internal fertilisation - Precocial & Altricial development - Parental care
Courtship
Behavioural patterns of male & female animals, leading to mating & ultimately reproduction.
Ensures both sexes ready for mating.
Identify mating partners of same species, prevent unsuccessful mating with different species,
waste of energy. (Male use energy for courtship, female save for laying eggs)
Choose suitable mating partner. Females choose bigger, stronger, attractive physical features,
result in more & healthier offspring.

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller erinswanepoel. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $5.42. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

82871 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling

Recently viewed by you


$5.42
  • (0)
  Add to cart