MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 1275 Mcqs, each offering curated multiple-choice questions to sharpen your Biology Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 501. |
All of the following coelenterates show alternation of generation except: |
| A. | Hydra |
| B. | Obelia |
| C. | Aurelia |
| D. | None of these |
| Answer» B. Obelia | |
| 502. |
Extremely long molecule of DNA that is tightly folded to fit inside the cell component is called_____________? |
| A. | Nucleus |
| B. | Chromosome |
| C. | Chromatid |
| D. | Chromatin body |
| Answer» E. | |
| 503. |
Psedudocoelom is character of____________? |
| A. | Coelenterates |
| B. | Platyhelminthes |
| C. | Aschelminthes |
| D. | Annelids |
| Answer» D. Annelids | |
| 504. |
Which of the following statement about plants is incorrect? |
| A. | All are eukaryotes |
| B. | They are multicellular |
| C. | Non-motile organisms |
| D. | They Are heterotrophes |
| Answer» E. | |
| 505. |
Enteron in coelenterates acts as___________? |
| A. | Digestive cavity |
| B. | Body cavity |
| C. | Transporting cavity |
| D. | all of these |
| Answer» E. | |
| 506. |
Antheridia and archegonia are born on ______________ in bryophytes. |
| A. | Sporophyte |
| B. | Gametophyte |
| C. | Both of these |
| D. | None of these |
| Answer» C. Both of these | |
| 507. |
Second largest phylum of invertebrates is____________? |
| A. | Porifera |
| B. | Arthropoda |
| C. | Mollusca |
| D. | Chordata |
| Answer» D. Chordata | |
| 508. |
Which of the following of bryophytes are the simplest one? |
| A. | Porella |
| B. | Funaria |
| C. | Anthocerus |
| D. | Polytrichum |
| Answer» B. Funaria | |
| 509. |
Prechordates is another name used for___________? |
| A. | Echinoderms |
| B. | Hemichordates |
| C. | Vertebrates |
| D. | Chordates |
| Answer» C. Vertebrates | |
| 510. |
in which cell ribosome are of large size and present either on endoplasmic reticulum or free in cytoplasm? |
| A. | prokaryotic |
| B. | eukaryotic |
| C. | both |
| D. | all the above |
| Answer» C. both | |
| 511. |
Mantle in molluscs is present over____________? |
| A. | Head |
| B. | Ventral muscular foot |
| C. | Dorsal visceral region |
| D. | All of these |
| Answer» D. All of these | |
| 512. |
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 |
| Answer» B. Few centimeter wide to more than one meter tall | |
| 513. |
True metamorphosis is not present in________? |
| A. | Crustacea |
| B. | Insecta |
| C. | Arachnida |
| D. | Myriapoda |
| Answer» D. Myriapoda | |
| 514. |
Body is eel like in___________? |
| A. | Cyclostomata |
| B. | Chondrichthyes |
| C. | Osteichthyes |
| D. | None of these |
| Answer» B. Chondrichthyes | |
| 515. |
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 |
| Answer» C. Structures associated with them | |
| 516. |
Pseudocoelem develops from____________? |
| A. | Blastopore |
| B. | Plastoquinone |
| C. | Blastocoel |
| D. | Splitting of mesoderm |
| Answer» D. Splitting of mesoderm | |
| 517. |
Excretory system of platyhlminthes consists of___________? |
| A. | Nephridia |
| B. | Flame cells |
| C. | Malpighian tubules |
| D. | Nephrons |
| Answer» C. Malpighian tubules | |
| 518. |
Mammals became dominant in__________? |
| A. | Proterozoic era |
| B. | Mesozoic era |
| C. | Paleozoic era |
| D. | Cenozoic era |
| Answer» E. | |
| 519. |
Exoskeoeton of coelenterates terates is made up to__________? |
| A. | Calcium |
| B. | Silica |
| C. | Chitin |
| D. | Both A & B |
| Answer» B. Silica | |
| 520. |
The sponges in which sperms develop first are included in the category of__________? |
| A. | Peritandrous |
| B. | Pertandrous |
| C. | Protendrous |
| D. | Protandrous |
| Answer» E. | |
| 521. |
Notochord is present throughout life in___________? |
| A. | Urochordates |
| B. | Cephalochordates |
| C. | Chordates |
| D. | Vertebrates |
| Answer» C. Chordates | |
| 522. |
The internal buds are known as__________? |
| A. | Spicules |
| B. | Choanocytes |
| C. | Gemmules |
| D. | None of these |
| Answer» D. None of these | |
| 523. |
In acoelomates gut is ________ in origin. |
| A. | Ectodermal |
| B. | Endodermal |
| C. | Mesodermal |
| D. | None of these |
| Answer» C. Mesodermal | |
| 524. |
A sponge of Antarctica which is more than a meter tall is____________? |
| A. | Scolymastra joubini |
| B. | Euplectella |
| C. | Spongilla |
| D. | Leucoselenia |
| Answer» B. Euplectella | |
| 525. |
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 |
| Answer» D. None of these | |
| 526. |
Venus flower basket is also known as___________? |
| A. | Sycon |
| B. | Euplectella |
| C. | Leucoselenia |
| D. | Spongilla |
| Answer» C. Leucoselenia | |
| 527. |
Which system is present in nematodes? |
| A. | Sac – like digestive system |
| B. | Tube – like digestive system |
| C. | Circulatory system |
| D. | Respiratory system |
| Answer» C. Circulatory system | |
| 528. |
In some cases the blastomere can produce complete embryo the cleavage will be___________? |
| A. | Spiral and determinate |
| B. | Radial and indeterminate |
| C. | Spiral and indeterminate |
| D. | Radial and determinate |
| Answer» C. Spiral and indeterminate | |
| 529. |
Aquatic arthropods respire through__________? |
| A. | Spiracles |
| B. | Gills |
| C. | Book lungs |
| D. | Both b and c |
| Answer» E. | |
| 530. |
Sperms are _________ in origin. |
| A. | Ectodermal |
| B. | Mesodermal |
| C. | Endodermal |
| D. | None of these |
| Answer» C. Endodermal | |
| 531. |
The skeleton of the sponges is in the form of variously shaped needle like structures called___________? |
| A. | Stripules |
| B. | Spicules |
| C. | Brails |
| D. | Spines |
| Answer» C. Brails | |
| 532. |
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 |
| Answer» D. It is largest kingdom | |
| 533. |
E. coli and example of entrobacteriace is important for causing diarrheal diseases its size is____________? |
| A. | 0.1-600 um |
| B. | 100-200 nm |
| C. | 1.1-1.5 um (width) 2.0-6.0 um (length) |
| D. | 0.75-1.25 um |
| Answer» D. 0.75-1.25 um | |
| 534. |
Inner layers of the sponges are made up of__________? |
| A. | Pinacocytes |
| B. | Choanoderm |
| C. | Choanoytes |
| D. | Pinacoderm |
| Answer» D. Pinacoderm | |
| 535. |
Of the following which one is non-cellular in most cases in animals? |
| A. | Mesenchyme |
| B. | Sclerenchyma |
| C. | Chlorenchyma |
| D. | Mesoderm |
| Answer» B. Sclerenchyma | |
| 536. |
Cell wass of Archaeobacteria does not contain_____________________? |
| A. | Peptidoglycan |
| B. | Proteins |
| C. | Glycoproteins |
| D. | Polysaccharides |
| Answer» B. Proteins | |
| 537. |
Gram positive bacteria appear_______________? |
| A. | Purple |
| B. | Red |
| C. | Pink |
| D. | Blue |
| Answer» B. Red | |
| 538. |
Which of the following structure primarily helps in attachment of bacteria on various surfaces____________? |
| A. | Flagella |
| B. | Pili |
| C. | Both of these |
| D. | None of these |
| Answer» C. Both of these | |
| 539. |
Circulatory system is open type in all of the following except:___________? |
| A. | Arthropoda |
| B. | Gastropoda |
| C. | Pelecypoda |
| D. | Cephalopoda |
| Answer» E. | |
| 540. |
Example of bacteria requiring low concentration of oxygen is__________? |
| A. | Campylobactor |
| B. | spirocheta |
| C. | E-coli |
| D. | Pseudomonas |
| Answer» B. spirocheta | |
| 541. |
Cell wall is absent in___________? |
| A. | Cocci |
| B. | Bacilli |
| C. | Mycobacterium |
| D. | Mycoplasma |
| Answer» E. | |
| 542. |
The size of Spirochete is_____________? |
| A. | 0.1 -600 um |
| B. | 100-200 nm |
| C. | 500 um |
| D. | 0.75-1.25 um |
| Answer» D. 0.75-1.25 um | |
| 543. |
Purple non-sulphur bacteria is an example of___________? |
| A. | Heterotrophic bacteria |
| B. | Chemosynthetic bacteria |
| C. | Photosynthetic bacteria |
| D. | Saprotrophic bacteria |
| Answer» D. Saprotrophic bacteria | |
| 544. |
Which of the following help cyanobacteria to locomote? |
| A. | Flagella |
| B. | Gas vesicles |
| C. | Both of these |
| D. | None of these |
| Answer» C. Both of these | |
| 545. |
The common waste material in bacteria is____________? |
| A. | Glycogen |
| B. | Lactic acid |
| C. | Ammonia |
| D. | Urea |
| Answer» C. Ammonia | |
| 546. |
Keto group is represented as___________? |
| A. | CO |
| B. | C-COO-C |
| C. | HCOH |
| D. | HOH |
| Answer» B. C-COO-C | |
| 547. |
In living organisms the lubricant which provides protection against damage resulting from friction is___________? |
| A. | Carbohydrates |
| B. | Fatty acid |
| C. | Water |
| D. | Protein |
| Answer» D. Protein | |
| 548. |
Of the following, which one is missing in herbivores_______________? |
| A. | Premolars |
| B. | Canines |
| C. | Incisors |
| D. | Molars |
| Answer» C. Incisors | |
| 549. |
Who coined the term Animalcules for microorganisms like Bacteria and protozoa______________? |
| A. | Robert Koch |
| B. | Louis Pasteur |
| C. | Alexander Fleming |
| D. | Leeuwenhoek |
| Answer» E. | |
| 550. |
Glycolipids and glycoproteins have structural role in the ______________ matrix of animal and bacterial cell? |
| A. | Extracellular |
| B. | Intracellular |
| C. | Both of these |
| D. | Glucose |
| Answer» B. Intracellular | |