Biology 651-700 MCQs

Biology

651. Coelom that develops from the archenteron as outpouching is _________ ?

a. Pseudocoelom

b. Enterocoelom

c. Schizocoelom

d. None of these

652. Of the following which one is not found in series proterostomia?

a. Annelida

b. Arthropoda

c. Mollusca

d. Echinodermata

653. In most triploblasts after embryonic development the three layers are represented as _________ ?

a. Separate layers of cells

b. Structures formed from them

c. Structures associated with them

d. Their functions in body

654. The function of coelom is _________ ?

a. To increase the size of the animals

b. To help in the functioning of reproductive system

c. To provide space for the development of organs and systems

d. None of these

655. A sponge of Antarctica which is more than a meter tall is _________ ?

a. Scolymastra joubini

b. Euplectella

c. Spongilla

d. Leucosolenia

656. The sponges in which sperms develop first are included in the category of _________ ?

a. Peritandrous

b. Pertandrous

c. Protendrous

d. Protandrous

657. The skeleton of sponges is made up of _________ ?

a. Calcium

b. Silica

c. Both of these

d. None of these

658. Sperms released in water are carried to the mesenchyme in sponges by __________ ?

a. Amoeboid cell

b. Stipules

c. Spicules

d. Spines

659. The single main opening of the sponge cavity is _________ ?

a. Osculum

b. Ostia

c. Spongocoel

d. None of these

660. 80% of the food of sponges consists of _________ ?

a. Detrital organic particles

b. Zooplankton and small animals

c. Phytoplanktons

d. All of these

661. In sponges fertilization takes place in _________?

a. Ectoderm

b. Mesenchyme

c. Endoderm

d. Uterus

662. Which of the following are motile zooids in cnidarians?

a. Polyps

b. Medusae

c. Both of these

d. None of these

663. Mammals became dominant in _________ ?

a. Proterozoic era

b. Mesozoic era

c. Paleozoic era

d. Cenozoic era

664. Which of the following fishes contained lungs?

a. Lamprey

b. Perch

c. Plaice

d. Dipnoi

665. Notochord is present throughout life in _________ ?

a. Urochordates

b. Cephalochordates

c. Chordates

d. Vertebrates

666. Body is eel like in __________ ?

a. Cyclostomata

b. Chondrichthyes

c. Osteichthyes

d. None of these

667. Body is globular in _________ ?

a. Cake urchin

b. Sea Urchin

c. Sea cucumber

d. Brittle star

668. Second largest phylum of invertebrates is __________ ?

a. Porifera

b. Arthropoda

c. Mollusca

d. Chordata

669. Main blood vessel of arthropods usually:

a. Lies on dorsal side

b. Lies on ventral side

c. Lies on lateral side

d. Is not present

670. _________ are the first group of invertebrates which have developed a closed circulatory system.

a. Nematodes

b. Annelids

c. Arthropods

d. Molluscs

671. Of the following which one is not the characteristic of Kingdom Animalia.

a. All animals are ingestive heterotrophs

b. All animals are eukaryotes

c. All animals develop from the dissimilar gametes i.e. large sperm and small egg

d. It is largest kingdom

672. Coelom is lined by _________ ?

a. Parietal mesoderm

b. Visceral mesoderm

c. Mesoderm

d. Both a & b

673. Porifera range in size from _________ ?

a. Few millimeter wide to more than one meter tall

b. Few centimeter wide to more than one meter tall

c. Few decimeter wide to more than one meter tall

d. One meter wide to more than millimeter tall

674. Enteron in coelenterates acts as _________ ?

a. Digestive cavity

b. Body cavity

c. Transporting cavity

d. All of these

675. All of the following coelenterates show alternation of generation except:

a. Hydra

b. Obelia

c. Aurelia

d. None of these

676. Excretory system of Platyhelminthes consists of _________ ?

a. Nephridia

b. Flame cells

c. Malpighian tubules

d. Nephrons

677. Pseudocoelom develops from _________ ?

a. Blastopore

b. Plastoquinone

c. Blastocoel

d. Splitting of mesoderm

678. Exoskeleton of coelenterates is made up to _________ ?

a. Calcium

b. Silica

c. Chitin

d. Both a & b

679. All of the following are true for Platyhelminthes except _________ ?

a. Flatworms

b. Triploblastic

c. Coelomate

d. Bilateral symmetry

680. Nervous system of nematodes consists of _________ ?

a. Ventral nerve cord

b. Dorsal nerve cord

c. Lateral nerve cord

d. All of these

681. Polychaeta have _________ ?

a. Tentacles

b. Palps

c. Eyes

d. All of these

682. _________ are believed to have common origin with annelids.

a. Nematods

b. Arthropods

c. Molluscs

d. None of these

683. Mantle in molluscs is present over _________ ?

a. Head

b. Ventral muscular foot

c. Dorsal visceral region

d. All of these

684. Prechordates is another name used for ________ ?

a. Echinoderms

b. Hemichordates

c. Vertebrates

d. Chordates

685. True metamorphosis is not present in __________ ?

a. Crustacea

b. Insecta

c. Arachnida

d. Myriapoda

686. Pin warm is common name used for _________ ?

a. Rhabditis

b. Enterobius vermicularis

c. Ancylostoma duodenale

d. Taenia solium

687. Which system is present in nematodes?

a. Sac - like digestive system

b. Tube - like digestive system

c. Circulatory system

d. Respiratory system

688. Which of the following system is segmentally arranged in annelids?

a. Excretory system

b. Digestive system

c. Circulatory system

d. Nervous system

689. The organs of locomotion in annelids are __________ ?

a. Muscles

b. Hydrostatic skeleton

c. Parapodia

d. Setae

690. The number of chromosomes in human cell is _________ ?

a. 48

b. 44

c. 46

d. 26

691. The resolving power of electric microscope is __________ ?

a. 0.2 mm

b. 0.2 nm

c. 0.2 m

d. none of these

692. Free living example of Platyhelminthes is _________ ?

a. Dugesia

b. Fasciola

c. Taenia

d. None of these

693. Psedudocoelom is character of _________ ?

a. Coelenterates

b. Platyhelminthes

c. Aschelminthes

d. Annelids

694. Which of the following statement about plants is incorrect?

a. All are eukaryotes

b. They are multicellular

c. Non-motile organisms

d. They are heterotrophs

695. Antheridia and archegonia are born on __________ in bryophytes.

a. Sporophyte

b. Gametophyte

c. Both of these

d. None of these

696. Which of the following of bryophytes are the simplest one?

a. Porella

b. Funaria

c. Anthocerus

d. Polytrichum

697. Ferns are included in _________ ?

a. Psilopsida

b. Lycopsida

c. Sphenopsida

d. Pteropsida

698. In which cell, ribosomes are of large size and present either on endoplasmic reticulum or free in cytoplasm?

a. Prokaryotic

b. Eukaryotic

c. Both

d. All the above

699. Mitochondria in heart muscles are nearly __________ ?

a. 400

b. 375

c. 350

d. 325

700. Mitochondria in ear lobe cells are nearly __________ ?

a. 40

b. 50

c. 55

d. 60