A. Contain mainly unicellular organisms.
B. Their contractile vacoule is respobsible for water regulation.
C. They are even capable of sexual reproduction.
D. Diploid nucleus being smaller is responsible for cells metabolism and growth while polyploidy nucleus functions in sexual process.
Related Mcqs:
- Which of the following statement is incorrect about Glyoxisomes?
A. They contain enzymes which help in conversion of fatty acids into carbohydrate
B. They are abundant in soyabeans but absent in pea.
C. They are present through out life of a plant and provide them whth energy through Glyoxylate cycle.
D. They are signle membranous organelles - Which of the following statement is incorrect5 for fats containing unsaturated fatty acid_____________?
A. They contain double bond
B. They are usually solid at room temperature
C. They are lighter than water
D. Their specific gravity is less than 1 - Which of the following statement is incorrect about RNA_________________?
A. The pentose sugar in it is Ribose.
B. It contains Adenine Guanine Thymine and Cytosine
C. It is present in the nucleoli
D. It may be folded back on itself to give double helical characteristics. - Which of the following statement about AIDS is incorrect:
A. is a host specific disease
B. An infected mother cannot pass the virus to her baby.
C. Results in enlargement of lymph nodes
D. Can be prevented. - Which of the following statement is incorrect about algae______________?
A. Their zygote unlike plants is protected by parental tissue
B. Their classification is based on pigment composition
C. Most of them have different morphological forms in-different stages of their life cycle
D. Almost all of them are aquatic - Which of the following statement about neuron is incorrect___________________?
A. They not only conduct impulses but also generate them
B. They are not the only cellular component of nervous system
C. They may show limited regenerative capabilities
D. Like all the living cell, when they mature and divide to form similar cells - 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 - Which of the following statement about an arthropod exoskeleton is incorrect?
A. It permits gaseous exchange
B. It contains joints, for the same purpose as present in human skeletal system
C. It provides muscle attachment
D. Like all the other types of exoskeleton, they lack sensation - Which of the following statement is incorrect regarding the locomotion in Euglena?
A. Move with the help of flagellum, attached to the anterior pole of the body.
B. Flagellum whipping backwards moving the organism forward, and when moves forward the organism moves backward.
C. Myonemes can change the direction of the body by making it to shorten from anterior to the posterior pole.
D. None of these - Which of the following statement about Homeostasis is incorrect?
A. There is a definite control system that regulates the homeostatic activities
B. Homeostatic mechanisms keep the internal environment fixed despite of wide changes in external environment
C. Because of this the fluctuations of internal environment are of extremely narrow range as compared to that of external environment
D. All are correct
