MCQ on Phylum Hemichordata for NEET
NEET Biology MCQ on Phylum Hemichordata with Answers by Expert Teacher. Every Questions is Important and Common for NEET-UG Exam.
1.) The hemichordate group is similar to the …………………………………………………………………………………..
a) Nematoda
b) Arthropoda
c) Echinodermata
d) Annelida
2.) Hemichordata was earlier placed under which phylum?
a) Echinodermata
b) Amphibia
c) Chordata
d) None
3.) Identify the INCORRECT statement from the following.
a) Echinoderms have an unsegmented, soft, bilaterally symmetrical, and vermiform body.
b) Echinoderms have an alimentary canal that is ‘U’ shaped and complete.
c) Echinoderms body is divided into three parts i.e. Mouth, tentacle, and Abdomen.
d) Echinoderms have a mucous gland that is present in the single-layered epidermis of the body wall.
4.) Hemichordata serves as a connecting link.
a) Echinodermata and amphibia
b) Chordata and Arthropoda
c) Annelida and mollusca
d) Echinodermata and chordata
5.) Balanoglossus is an example of:
a) Echinodermata
b) Hemichordata
c) Porifera
d) Monera
6.) Balanoglossus contains ……………….……………………………………………… type of circulatory system.
a) Closed
b) Open
c) Water canal
d) Water vascular
7.) Greek word ‘Enteropneusta’ is also called:
a) Gut breathed
b) Feather star
c) Sea feather
d) Feather gill
8.) Match the following:
i) Fertilisation a) Triploblastic
ii) Proboscis gland b) external
iii) Germ layer c) Excretory organ
a) i)-a), ii)-c), iii)-b)
b) i)-b), ii)-a), iii)-c)
c) i)-a), ii)-b), iii)-c)
d) i)-b), ii)-c), iii)-a)
9.) Which of the following is an example of Cephalodiscida?
a) Dendrograptus
b) Ptychodera
c) Saccoglossus
d) Atubaria
10.) What is the body shape of the members of the phylum Hemichordata?
a) Circular
b) Longitudinal
c) Cylindrical
d) Semi-circular
11.) In the Succoglossus, mature gonads in the male are:
a) Gray
b) Yellow
c) Pinkish
d) Whitish
12.) Respiration in hemichordates occurs through:
a) Lungs
b) Skin
c) Gills
d) Nostrils
13.) Gonads of Ptychodera are located in the:
a) Uterus
b) Rib cage
c) Genital wings
d) Gill slits
14.) The body of Saccoglossus is divided into how many parts:
a) 2
b) 3
c) 1
d) 4
15.) Enteropneusta are also known as:
a) Roundworms
b) Tapeworms
c) Flukes
d) Acorn worms
16.) What distinctive feature do hemichordates have?
a) Worm-like marine animal
b) Body consists of Proboscis, collar, and trunk
c) Spinal Cord present
d) Both (a) & (b)
17.) Which one of the following is an example of a protostome?
a) Echinoderms
b) Arthropods
c) Hemichordates
d) Chordates
18.) Hemichordata comes under the non-chordata phylum.
a) True
b) False
19.) In the Deuterostome, …………………………………………………………………………………… is formed by Blastopore.
a) Mouth
b) Nose
c) Gonads
d) Anus
20.) Acorn worms come under:
a) Trematode
b) Hemichordata
c) Echinodermata
d) Cestode
21.) Match the following:
Column A Column B
A.) Enteropneusta i) ‘U’ shaped
B.) Pterobranchia gill-slits ii) Acorn
C.) Enteropneusta gill-slits iii) Never ‘U’ shaped
a) A-iii), B-ii) and C-i)
b) A-ii), B-iii) and C-i)
c) A- i), B-ii) and C-iii)
d) A-ii), B-i) and C-iii)
Answers:
1.)
Solution: c) Echinodermata
Hemichordata includes a small group of worm-like organisms. The organisms of Hemichordata show similarities with the class Echinoderms.
2.)
Solution: c) Chordata
Earlier hemichordates were placed under the sub-phylum of chordates but now it is placed under non-chordates because they don’t have a notochord.
3.)
Solution: c) Echinoderms body is divided into three parts i.e. Mouth, tentacle, and Abdomen.
The body or echinoderms is divided into three parts i.e. proboscis, collar, and trunk.
4.)
Solution: d) Echinodermata and Chordata
It is a connecting link between Echinodermata and Chordata because it has characteristics that are present in both the phylum.
5.)
Solution: b) Hemichordata
Balanoglossus, Atubaria, Saccoglossus, and Dendrograptus are worm-like organisms and an example of Hemichordata.
6.)
Solution: b) Open
Balanoglossus contains an open type of circulatory system in which tissues and cells are directly bathed in the bloodstream and there are no blood vessels present.
7.)
Solution: a) Gut breathed
Enteropneusta is a Greek word where ‘Enteron’ refers to gut and ‘Pneustos’ refers to breathing.
8.)
Solution: d) i)-b), ii)-c), iii)-a)
Fertilization is external with indirect development followed by larval stage, proboscis gland helps in excretion of waste materials from the body, and embryonic stage contains three germ layers, so triploblastic.
9.)
Solution: d) Atubaria
Atuburia is an example of the order Cephalodiscida. Saccoglossus and Ptychodera both are examples of Class Enteropneusta. Dendrograptus is an example of Class Graptolite.
10.)
Solution: c) Cylindrical
Members of the phylum hemichordate have cylindrical body shapes which consist of an anterior proboscis, a collar, and a trunk.
11.)
Solution: b) Yellow
In the Succoglossus, mature male gonads are yellow and mature female gonads are Gray.
12.)
Solution: c) Gills
Respiration occurs through the gills by the in and out movement of water during which gases are exchanged.
13.)
Solution: c) Genital wings
Ptychodera is a soft-bodied animal that is yellowish in colour. The gonads of Ptychoder are present in the genital wings.
14.)
Solution: b) 3
The body is divided into 3 parts which are an anterior proboscis, a collar and a long trunk.
15.)
Solution: d) Acorn worms
Invertebrates that belong to the class Enteropneusta are soft-bodied animals. This animal’s front end is acorn-shaped.
16.)
Solution: d) Both (a) & (b)
Because hemichordates are placed under non-chordates so they can’t have spinal cord thus options a and b are correct.
17.)
Solution: b) Arthropods
In the Protostome, the mouth is formed from Blastopore. Arthropods, Molluscs, and Annelids are examples of protostomes.
18.)
Solution: a) True
Because hemichordates don’t have a notochord so they are placed under non-chordates.
19.)
Solution: d) Anus
Deuterostomes are ones whose anus is formed by Blastopore. Examples of Deuterostomes are Echinoderms, Hemichordates, and chordates.
20.)
Solution: b) Hemichordata
Acorn worms have 111 known species in the world and they are a hemichordate class of invertebrates consisting of one order of the same name.
21.)
Solution: Solution: b) A-ii), B-iii) and C-i)
Enteropneusta is also called Acorn and it has ‘U’ shaped gill slits. Organisms of Pterobranchia have never ‘U’ shaped gill-slits.