26- Choose the correct answer.
1- Which one of the following is aninvertebrate?
A Whale
B-starfish
C-salmon
2- Mammals reproduce by..
A-eggs
B-birth
C-seed
3- What helps the fish to breathe under water?
A-fins
B-scales
C-gills
4- What are the two ways flowering plants allow for pollination?
A Wind
B. Animals
C People
Answers
1) Which one of the following is an an invertebrate?
A) Whale
B) Starfish ✔
C) Salmon
Exp. Invertebrates refer to those organisms that do not have a backbone. Starfish that falls under Echinodermata does not have a backbone and hence it is an invertebrate.
2) Mammals reproduce by:
A) eggs
B) birth ✔
C) seed
Exp. Mammals showcase the mode of sexual reproduction with the fusion of male and female gametes. The development of the embryo takes place inside the body of the female and she gives birth to the baby after complete development.
3) What helps the fish to breathe under water?
A) fins
B) scales
C) gills ✔
Exp. Gills are the respiratory organs of fishes. They help to take in the dissolved oxygen in water and the exchange of the gases take place in the blood vessels present in the gills. Usually, these gills are present at the sides of the head of the fish.
4) What are the two ways flowering plants allow for pollination?
A) Wind ✔
B) Animals ✔
C) People
Exp. Wind and animals are both helpful in the process of pollination. In wind pollination, the male gametes are carried by the wind and deposited on other plants. In animal pollination, insects like bees and butterflies take a major role. Pollen grains get attached the bodies of insects and get deposited on other plants.
Answer:
1. starfish
2. birth
3.gills
4. wind and animals
hope this is helpful for you