Find out the correct statement related with earthworm-
(A) Genital openings are present on the dorsal surface
(B) Dorsal blood vessels is present on the lateral sides of the body
(C) 2 common Indian Earthworm are Lumbricus and pheretima
(D) First body segment is clitellum

Identify the correct and wrong statements :- (a) Human skeleton has 206 bones (b) There are 12 paris of ribs in human (c ) Sternum is present on the dorsal side of the body (d) All mammals (except of few) have 8 cervical vertebrae. (e) Ribs are bicephalic.

Identify the correct and wrong statements :- (a) Human skeleton has 206 bones (b) There are 12 pairs of ribs in human (c) Sternum is present on the dorsal side of the body. (d) All mammals (except of few) have 8 cervical vertebrae. (e) Ribs are bicephalic.

Which of the following statements is correct about excretion in earthworm ? (i) Earth is mainly ureotelic (ii) Septal nephridia, present on both sides of intersegmental septa of segment 15 to the last open into intestine (iii) Integumentary nephridia, attached to lining of body wall of segment 3 to the last, open on the body surface (iv) Different types of nephridia are basicaly similar in structure (v) Nephridia regulate the volume and composition of body fluids.

Correct the wrong statements among the following: (a) In earthworm, a single male genital pore is present. (b) Setae help in locomotion of earthworm. (c) Muscular layer in the body wall of earthworm is made up of only circular muscles. (d) Typhlosole is the part of intestine of earthworm.

Read the following statements and find out the correct statement. a. Cnidoblasts are used for anchorage, defense and for the capture of prey b. The property of living organism to emit light is called bioluminescence c. Prifers, sea walnuts, platyhelminthes and earthworms are monoecious or hermaphrodite d. Aschelminthes, molluscs, echinoderms and hemichordates are dioecious or unisexual e. Vertebrates have ventral musculr heart, kidneys for excretion and osmoregulation and paired appendages (fins or limbs)

Read the following statements and find out the incorrect statements. a. The length of DNA is usually defined as number of nucleotides or base pairs present in it. b. In DNA, every nucleotide residue has an additional -OH group present at 2' -position in the deoxyribose. c. Nuclein was discovered and named by Friedrich Meisher in 1969. d. Adenine pair with Thymine and Guanine with Cytosine through H-bonds. This makes one strand complementary to the other. e. the proposition of double helical model of DNA was also based on the observation of Erwin Chargaff.

Read the following statements and find out the incorrect (a) Hyoid is present at the roof of the buccal cavity and included in the skull (b) The skull region anieulates with the superior region of the vertebral column with the help of two occipital condyles (c) First vertebra is the axis which articulates with the occipital condyles (d) Stemum is a hat bone on the dorsal midline of therox. Vertebral column is dorsally placed Appendicular site