TN Board Class 6 English Chapter 1 Sea Turtles Textbook Exercises , Fill in the blanks ,Extra question Answer and more…….
Section 1
Put a T for the correct and a F for the incorrect statements.
- Turtles are different from tortoises. (T)
- Turtles are sea animals. (T)
- There are seven kinds of sea turtles in the world. (T)
- Sea turtles are very small. (F)
- Turtles come ashore to lay eggs. (T)
- Sea turtles come to rest on land. (F)
- Olive Ridleys are the only sea turtles seen on Indian shores. (F)
Short questions and answers (QA) based on the chapter:
Q: What is the primary habitat of sea turtles?
A: Sea turtles primarily inhabit the sea.
Q: How many species of marine or sea turtles exist globally?
A: There are seven species of marine or sea turtles worldwide.
Q: Which sea turtle species is the smallest?
A: The Olive Ridley is the smallest sea turtle species.
Q: What is the size of the largest sea turtle species?
A: The Leatherback is the largest sea turtle species, growing up to 2.2 meters in length and weighing up to 700 kg.
Q: Why do sea turtles need to come ashore?
A: Sea turtles come ashore to lay their eggs.
Q: Which sea turtle species is still commonly seen nesting on Indian shores?
A: The Olive Ridley sea turtles are still commonly seen nesting on Indian sandy beaches.
Q: What is Arribada?
A: Arribada is a unique phenomenon where thousands of female Olive Ridley turtles come ashore simultaneously to lay their eggs on specific beaches.
Q: Where does Arribada occur?
A: Arribada occurs in Odisha, which is one of the only three places in the world where this phenomenon takes place.
Section II
Write true or false
1. Female Olive Ridleys come ashore at night to lay eggs. [True]
2. The eggs of an Olive Ridley are in the shape and size of a cricket ball. [False]
3. Ridleys come to lay their eggs in the month of January. [True] also in March.
4. The turtles use their flippers and make a hollow for their nests. [True]
5. The hatchlings use a tiny egg-tooth to come out of the eggs. [True]
Short questions and answers from section II
Q: What determines the sex of sea turtle hatchlings?
A: The temperature inside the egg during incubation determines the sex of sea turtle hatchlings.
Q: At what temperature are only male hatchlings produced?
A: Only male hatchlings are produced when the eggs develop at temperatures between 27˚C and 28˚C.
Q: At what temperature are only female hatchlings produced?
A: Only female hatchlings are produced at a temperature of 30˚C.
Q: When do female Olive Ridleys come ashore to lay their eggs?
A: Female Olive Ridleys come ashore to lay their eggs between January and March.
Q: How deep is the nest cavity that the turtle digs?
A: The turtle digs a nest cavity that is approximately 45 cm deep.
Q: What do the hatchlings use to open their eggshells?
A: Hatchlings use a tiny “egg-tooth” at the tip of their snouts to open their eggshells.
Q: What determines the sex of the turtle embryos while they are growing?
A: The temperature inside the egg during incubation determines the sex of the turtle embryos.
Section-III
Choose the correct answers. You may choose more than one answer if needed.
1. The ___________________ is a biological relative of tortoises.
a. sea turtle
b. fish
c. reptile
2. In India’s coastal waters we can see a species of ___________________.
a. tortoises
b. sea turtles
c. dolphin
Sea turtles come to the shore to___________________.
a. visit their birth place
b. lay eggs
c. go back to sea
4. It is a problem for sea turtles to come ashore because ___________________.
a. they find it difficult to walk on sand
b. they don’t know their way to the shore
c. animals and people hunt them
5. A turtle’s flippers help it to ___________________.
a. swim
b. dig a nest
c. climb
6. A sea turtle camouflages its nest by tossing sand on it to ___________________.
a. hide its eggs from predators
b. incubate eggs in the warmth of the sun
c. keep the hatchlings safe
Fill in the blanks with words that convey the correct meaning of the sentences.
1. Tiny hatchlings fall _________ (pray / prey) to many predators.
2. Sea turtles live their _________ (hole / whole) life in the sea .
3. The turtles come ashore only during the _________ (night / knight).
4. The predators follow the _________ (sent / scent) of the turtles to eat their eggs.
5. The female turtles lay eggs and go back to the _________ (see / sea).
