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Questions and Answers
Which of the following is true about larvae?
Which of the following is true about larvae?
What do fungi lack?
What do fungi lack?
How do plants, fungi, and animals differ in terms of nutrition?
How do plants, fungi, and animals differ in terms of nutrition?
What is the probable origin of the first true animals?
What is the probable origin of the first true animals?
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What is the sequence of developmental stages from blastula to embryo?
What is the sequence of developmental stages from blastula to embryo?
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Study Notes
Larvae
- Larvae are the immature forms of animals that undergo metamorphosis.
- Larvae often have different feeding habits and appearances compared to adults.
Fungi
- Fungi lack chlorophyll, the pigment essential for photosynthesis.
- This means fungi cannot produce their own food and depend on external organic sources for nutrition.
Nutrition in Plants, Fungi, and Animals
- Plants are autotrophs, meaning they produce their own food through photosynthesis.
- Fungi are heterotrophs, obtaining nutrition by absorbing organic matter from their surroundings.
- Animals are heterotrophs and ingest other organisms for food.
Origin of Animals
- The first true animals likely evolved from a group of single-celled eukaryotes, specifically flagellated protists.
Development Stages
- Blastula: A hollow ball of cells formed after cleavage of a fertilized egg.
- Gastrula: A stage where the blastula invaginates, forming a two-layered embryo with an inner layer (endoderm) and an outer layer (ectoderm).
- Organogenesis: During organogenesis, the germ layers (endoderm, mesoderm, ectoderm) differentiate and form the various organs of the embryo.
- Embryo: The developing organism before birth or hatching.
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Description
Test your knowledge of the evolution of animals with this quiz. Explore topics such as animal reproduction, comparison of plants, fungi, and animals, and the characteristics of different organisms. See how well-versed you are in the evolutionary journey of the animal kingdom.
