Question

pines and junipers are examples of

a. angiosperms
b. eudicots
c. gymnosperms
d. monocots
e. ferns
f. bryophytes

value: 6

the most successful group of animals are insects and they belong to the
__ phylum
a. cnidarians
b. mollusks
c. annelids
d. echinoderms
e. arthropods
f. chordates

value: 6

the first tetrapod animals are the

a. arthropods
b. amphibians
c. mollusks
d. annelids
e. mammals

Explanation:

• First question: Gymnosperms are seed - producing plants that have naked seeds (not enclosed in an ovary). Pines and junipers produce seeds in cones, which is a characteristic of gymnosperms. Angiosperms have seeds enclosed in fruits. Eudicots and monocots are types of angiosperms. Ferns reproduce via spores, and bryophytes are non - vascular plants.
• Second question: Insects are a class within the phylum Arthropoda. Arthropods are characterized by having an exoskeleton, segmented bodies, and jointed appendages. Cnidarians (e.g., jellyfish) have radial symmetry and stinging cells. Mollusks (e.g., snails) have a soft body often covered by a shell. Annelids (e.g., earthworms) are segmented worms. Echinoderms (e.g., starfish) have a spiny skin and radial symmetry as adults. Chordates have a notochord at some stage of development.
• Third question: Tetrapods are four - limbed vertebrates. Amphibians were the first tetrapod animals to evolve. Arthropods are invertebrates. Mollusks and annelids are also invertebrates. Mammals are a more evolved group of tetrapods that evolved after amphibians.

Answer:

1. c. Gymnosperms
2. e. Arthropods
3. b. Amphibians