Question

science
standard 9
please answer​

Answer 1

Answer:

A.  DORSAL FINS

B.  CAUDAL FIN

C. ANAL FIN

D.. PELVIC FIN

Answer 2

8) Atomic number is the fundamental properties of an atom. Atomic number is denoted by 'z'. ... Atomic number is equal to the number of protons present in an atom. Since an atom is electrically neutral, thus number of protons and number of electrons are equal to make an atom electrically neutral.

Most of the atom is empty space. The rest consists of a positively charged nucleus of protons and neutrons surrounded by a cloud of negatively charged electrons. The nucleus is small and dense compared with the electrons, bn which are the lightest charged particles in nature.

9) The parts are labelled as follows:

(a) Dorsal fin

(b) Caudal fin

(c) Pelvik fin

(d) Pectoral fin

Function of Caudal fin- It helps in streamlined movement in water