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.
| 851. |
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 |
| Answer» B. Lies on ventral side | |
| 852. |
Coelom is lined by__________? |
| A. | Parietal mesoderm |
| B. | Visceral mesoderm |
| C. | Mesoderm |
| D. | Both A & B |
| Answer» E. | |
| 853. |
Microspore of a seed plant that contain male gametophyte including the gamete is called_______________? |
| A. | Pollen grain |
| B. | Ovule |
| C. | Microgametophyte |
| D. | Microsporangium |
| Answer» B. Ovule | |
| 854. |
All of the following are true for Platyhelminthes except____________? |
| A. | Flatwarms |
| B. | Triploblastic |
| C. | Coelomate |
| D. | Bilateral symmetry |
| Answer» D. Bilateral symmetry | |
| 855. |
Nervous system of nematods consists of? |
| A. | Ventral nerve cord |
| B. | Dorsal nerve cord |
| C. | Lateral nerve cord |
| D. | All of these |
| Answer» E. | |
| 856. |
Polychaeta have____________? |
| A. | Tentacles |
| B. | Palps |
| C. | Eyes |
| D. | All of these |
| Answer» E. | |
| 857. |
__________ are believed to have common origin with annelids. |
| A. | Nematods |
| B. | Arthropods |
| C. | Molluscs |
| D. | None of these |
| Answer» C. Molluscs | |
| 858. |
The organs of locomotion in annelids are__________? |
| A. | Muscles |
| B. | Hydrostatic skeleton |
| C. | Parapodia |
| D. | Setae |
| Answer» D. Setae | |
| 859. |
Pin warm is common name used for__________? |
| A. | Rhabditis |
| B. | Enterobius vermicularis |
| C. | Ancylostoma duodenale |
| D. | Taenia solium |
| Answer» C. Ancylostoma duodenale | |
| 860. |
The number of chromosomes in human cell is_____________? |
| A. | 48 |
| B. | 44 |
| C. | 46 |
| D. | 26 |
| Answer» D. 26 | |
| 861. |
Which of following system is segmentally arranged in annelids? |
| A. | Excretory system |
| B. | Digestive system |
| C. | Criculatory system |
| D. | Nervous system |
| Answer» D. Nervous system | |
| 862. |
mitochondria in ear lobe cells are nearly____________? |
| A. | 40 |
| B. | 50 |
| C. | 55 |
| D. | 60 |
| Answer» C. 55 | |
| 863. |
The resolving power of electric microscope is____________? |
| A. | 0.2 mm |
| B. | 0.2 nm |
| C. | 0.2 m |
| D. | none of these |
| Answer» C. 0.2 m | |
| 864. |
mitochondria in heart muscles are nearly_____________? |
| A. | 400 |
| B. | 375 |
| C. | 350 |
| D. | 325 |
| Answer» D. 325 | |
| 865. |
Free living example of Platyhelminthes is____________? |
| A. | Dugesia |
| B. | Fasciola |
| C. | Taenia |
| D. | None of these |
| Answer» B. Fasciola | |
| 866. |
which of the following gives to rise two daughter cell during cell division? |
| A. | meiosis |
| B. | mitosis |
| C. | both a & b |
| D. | none of these |
| Answer» C. both a & b | |
| 867. |
four daughter cells are given to rise during the process of____________? |
| A. | meiosis |
| B. | mitosis |
| C. | cell division |
| D. | none of these |
| Answer» B. mitosis | |
| 868. |
Gametophyte of Psilopsida develops a symbiotic association with which of the following______________? |
| A. | Algae |
| B. | Bacteria |
| C. | Protozoa |
| D. | Fungus |
| Answer» E. | |
| 869. |
Bryophtes are called amphiabians of plant world because: |
| A. | Bryophytes like amphibian ancestors are one of the most primitive organisms in this world |
| B. | Bryophytes like amphibian live in damp shady places and close to water body. |
| C. | Amphibians have close relation with bryophytes in their habitat. |
| D. | All of these |
| Answer» C. Amphibians have close relation with bryophytes in their habitat. | |
| 870. |
Which of the following is an example of the living member of Psilopsida________________? |
| A. | Rhynia |
| B. | Psilophyton |
| C. | Psilotum |
| D. | Cooksonia |
| Answer» D. Cooksonia | |
| 871. |
In term of spore production Selaginella is characterized by________________? |
| A. | Homosporous |
| B. | Hetrosporous |
| C. | Both depending upon the conditions |
| D. | None of these |
| Answer» C. Both depending upon the conditions | |
| 872. |
Which of the following tracheophytes are also called arthrophytes______________? |
| A. | Psilopsids |
| B. | Lycopsids |
| C. | Sphenopsids |
| D. | Prteropsids |
| Answer» D. Prteropsids | |
| 873. |
Equistem is an example of___________? |
| A. | Psilopsida |
| B. | Lycopsida |
| C. | Sphenopsida |
| D. | Prteropsida |
| Answer» D. Prteropsida | |
| 874. |
Production of two types of spores is known as________________? |
| A. | Heterospory |
| B. | Homospory |
| C. | Heterogamy |
| D. | Gamospory |
| Answer» B. Homospory | |
| 875. |
Today the land habitat is dominated by__________________? |
| A. | Fungi |
| B. | Gymnosperms |
| C. | Angiosperms |
| D. | Tracheophytes |
| Answer» E. | |
| 876. |
Antherozoids the male gamete in bryophytes are attracted towards Archegonium i.e. female sex organ by____________? |
| A. | Phototactic phenomenon |
| B. | Chemotactic phenomenon |
| C. | Geotropic phenomenon |
| D. | Chemotropic movement |
| Answer» C. Geotropic phenomenon | |
| 877. |
Which of the following animal uses Setae and Muscles for their Iocomotion? |
| A. | Cockroach |
| B. | Snail |
| C. | Earthworm |
| D. | Star fish |
| Answer» D. Star fish | |
| 878. |
How many vertebrae are present in coccyx? |
| A. | 7 |
| B. | 12 |
| C. | 9 |
| D. | 4 |
| Answer» B. 12 | |
| 879. |
Which of the following bones bones are present in the plam of hand? |
| A. | Carpals |
| B. | Metacarpals |
| C. | Phalanges |
| D. | Metatarsals |
| Answer» C. Phalanges | |
| 880. |
Which one of the following is an example of a non-elastic connective tissue? |
| A. | Ligaments |
| B. | Tendon |
| C. | Muscles |
| D. | None of these |
| Answer» C. Muscles | |
| 881. |
How many vertebrae are present in vertebral column of man? |
| A. | 33 vertebrae |
| B. | 33 pairs of vertebrae |
| C. | 25 vertebrae |
| D. | 31 vertebrae |
| Answer» B. 33 pairs of vertebrae | |
| 882. |
Which of the following statement is incorrect about Molluscans? |
| A. | They are surrounded by single or double pieces of hard skeleton |
| B. | Their shell grows as the animal grows |
| C. | They have hydrostatic skeleton |
| D. | They move by tube feet |
| Answer» E. | |
| 883. |
Which of the following vertebrates have a fish-like body? |
| A. | Reptiles |
| B. | Aves |
| C. | Amphibians |
| D. | Mammals |
| Answer» D. Mammals | |
| 884. |
Which of the following statement about fatigue is correct? |
| A. | The major event in it is accumulation of lactic acid. |
| B. | Lactic acid accumulation turns pH in acidic range leading to muscle ache. |
| C. | Ionic imbalance may also cause it. |
| D. | All of these |
| Answer» E. | |
| 885. |
Collagen fibers of bone are hardened by deposition of_____________? |
| A. | Ca & PO4 |
| B. | CaCO3 |
| C. | CaSO4 |
| D. | SiO2 |
| Answer» B. CaCO3 | |
| 886. |
Roots of a plant show______________? |
| A. | Positive phototropism and negative geotropism |
| B. | Negative phototropism and positive geotropism |
| C. | Negative tactic movement and positive tropic movement |
| D. | Positive geotropism of stem and roots |
| Answer» C. Negative tactic movement and positive tropic movement | |
| 887. |
Why skeletal muscles are called striated muscles? |
| A. | They appear darker than smooth muscles by naked eye |
| B. | Alternating dark and light bands appear on their surface when visualized by naked eye |
| C. | Alternating dark and light bands appear on their surface when visualized via a microscope |
| D. | All of these |
| Answer» D. All of these | |
| 888. |
Active site of Rubisco is evolved to bind? |
| A. | CO2 |
| B. | O2 |
| C. | H2O |
| D. | All of these |
| Answer» E. | |
| 889. |
Endoskeleton is secreted by? |
| A. | Ectoderm |
| B. | Endoderm |
| C. | Mesoderm |
| D. | All of these |
| Answer» D. All of these | |
| 890. |
Which of the following cells are involved in soft callus formation? |
| A. | Fibroblast and osteoblast |
| B. | Osteoblast and osteoclast |
| C. | Osteoclast and osteocyte |
| D. | Onteocyte and osteoblast |
| Answer» B. Osteoblast and osteoclast | |
| 891. |
A disease of longs in which inside of the lungs is damaged resulting in cough and fever? |
| A. | Lung cancer |
| B. | Asthma |
| C. | Emphysema |
| D. | Pulmonary tuberculosis |
| Answer» D. Pulmonary tuberculosis | |
| 892. |
More than ___________ compounds of tar of tobacco smoke are involved to cause cancer? |
| A. | 5 |
| B. | 90 |
| C. | 15 |
| D. | 10 |
| Answer» E. | |
| 893. |
ATP are consumed during___________? |
| A. | Glycolysis |
| B. | Kreb’s cycle |
| C. | Light dependent phase |
| D. | none of these |
| Answer» B. Kreb’s cycle | |
| 894. |
Water is _________ times viscous than air? |
| A. | 50 |
| B. | 1000 |
| C. | 5000 |
| D. | 8000 |
| Answer» B. 1000 | |
| 895. |
Number of spiracles present in cockroach is___________? |
| A. | 15 |
| B. | 10 |
| C. | 20 |
| D. | 30 |
| Answer» D. 30 | |
| 896. |
Of the following, which one is a contagious disease? |
| A. | Tuberculosis |
| B. | Lungs cancer |
| C. | Asthma |
| D. | Emphysema |
| Answer» B. Lungs cancer | |
| 897. |
Number of spiracles present in the thorax of cockroach is___________? |
| A. | 2 |
| B. | 3 |
| C. | 5 |
| D. | 4 |
| Answer» E. | |
| 898. |
Haemoglobin can be almost completely oxygenated by an oxygen pressure of __________ of mercury. |
| A. | 10 mm |
| B. | 60 mm |
| C. | 10 cm |
| D. | 100 mm |
| Answer» E. | |
| 899. |
Oxygen contents per liter of air is____________? |
| A. | 10 ml |
| B. | 100 ml |
| C. | 200 ml |
| D. | 300 ml |
| Answer» D. 300 ml | |
| 900. |
Breaking of terminal phosphate of ATP releases about ___________ Kcal of energy? |
| A. | 6.1 |
| B. | 6.3 |
| C. | 7.1 |
| D. | 7.3 |
| Answer» E. | |