Notochord

Q.

What are the 3 classifications of fish?

Q.

Starting from the innermost part, the correct sequence of parts in an ovule are

1. Egg, embryo sac, nucellus and integument.

2. Egg, nucellus, embryo sac and integument.

3. Embryo sac, nucellus, integument and egg.

4. Egg, integument, embryo sac and nucellus.

Q.

What is the alternation of generation in Obelia?

Q. In phylum arthropoda, excretion takes place through

1. nephridia
2. flame cells
3. malpighian tubules
4. gills

Q. Notochord originates from

1. ectoderm
2. mesoderm
3. endoderm
4. none of the above

Q.

Body symmetry in Echinodermata is:

1. radial

2. bilateral

3. asymmetric

4. all

Q. Which of the following phylum has notochord?

1. Porifera
2. Coelenterata
3. Platyhelminthes
4. Cordata

Q. Notochord is:

1. Endodermally derived structure, formed on the dorso ventral side
2. Ectodermally derived structure, formed on the dorsal side
3. Mesodermally derived structure, formed on the dorsal side
4. Mesodermally derived structure, formed on the ventral side

Q. Match the following organisms with their respective characteristics.

a	Pila	i	Flame cells
b	Bombyx	ii	Comb plates
c	Pleurobrachia	iii	Radula
d	Taenia	iv	Malphigian tubules

Select the correct option from the following:

1. (a)-(ii), (b)-(iv), (c)-(iii), d-(i)
2. (a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)
3. (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
4. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)

Q.

Name an entity that possesses electric organs?

Q. Which of the following is a false statement regarding notochord?

1. The notochord is formed after the embryonic development
2. The notochord is mesodermally derived rod-like structure
3. The notochord is formed on the dorsal side of the body surface
4. The notochord is formed during the embryonic development in some animals

Q. Name of the Different types of larvas of different types of phylas present in non chordate animals

Q.

How would you choose between two characteristics to be used for developing a hierarchy in classification?

Q.

what is a gastrovascular tissue ?

Q.

What is a notochord?

Q. Which one of the following is not the basis of five kingdom classification?

1. Cell structure
2. Body organisation
3. Nutrition
4. Reserve food material

Q. Match the columns.

	Column I		Column II
$a$	Cup shaped	$1$	Ulothrix
$b$	Girdle shaped	$2$	Oedogonium
$c$	Stellate	$3$	Chlamydomonas
$d$	Reticulate	$4$	Zygnema

1. $a-2,b-4,c-3,d-1$
2. $a-3,b-1,c-4,d-2$
3. $a-3,b-4,c-2,d-1$
4. $a-4,b-3,c-1,d-2$
5. $a-3,b-4,c-1,d-2$

Q. Classification of mollusca with examples

Q.

WHAT IS THE PLOIDY LEVEL OF SYNERGIDS , ANTIPODAL CELLS AND EGG CELLS ??

Q.

Which one of the following statements is NOT correct about the occurrence of notochord?

1. Branchiostoma has notochord throughout its life.

2. Present only in larval stage in Phylum Chordata.

3. It is replaced by vertebral column in adult vertebrates.

4. In humans it is absent throughout the life.

Q.

Name the 5sub-phyla of Arthropoda.

Q. Which of these is not a vertebrate?

1. Columba
2. Pavo
3. Amphioxus
4. Petromyzon

Q. Read the following four statements :
A) Ovule is also known as microsporangium.
B) Raphe, represents the junction between ovule and funicle.
C) chalaza represents the basal part of ovule.
D) Embryo sac is also known as female gametophyte.
How many of the above statement are wrong ?

1. Four
2. One
3. Two
4. Three

Q. Which of the following lists contains a locomotor mechanism not possessed by protists?

1. pseudopodia, cilia, and flagella
2. flagella, axopodia, and pseudopodia
3. flagella, pseudopodia, and tube feet
4. cilia and pseudopodia

Q. Assertion :It is necessary to study life history of an ascidian to consider it as chordata. Reason: Tadpole larva of ascidians have a notochord that disappears in the adult.

1. Both A and R are true and Reason is the correct explanation for A
2. Both A and R are true and R is not the correct explanation for A
3. A is true but R is false
4. A is false but R is true

Q. Which of the following groups of animals is found exclusively in marine habitat?

1. Pisces
2. Echinoderms
3. Protozoa
4. Porifera

Q.

Do Rotifers have brains?

Q. Choose the correct option from the brackets:​
(ii) Aleurone layer is present in ​

1. Pea
2. Maize
3. Bean

Q. Assertion :Aristotle's lantern is present in an echinoderm. Reason: Aristotle's lantern resembles ship lantern.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Assertion is incorrect but Reason is correct

Q. Organisms are classified to

1. Know their distribution
2. Establish relationships
3. Know their major traits
4. Study evolution