Which of the following are true for an element?

(i) Atomic number = number of protons + number of electrons

(ii) Mass number = number of protons + number of neutrons

(iii) Atomic number = number of protons = number of neutrons

(iv) Atomic number = number of protons = number of electrons

(a) (i) and (ii)

(b) (i) and (iii)

(c) (ii) and (iii)

(d) (ii) and (iv)

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Reproduction

Asexual reproduction-  by spore formation (zoospores)

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Reproduction

sexual reproduction-  by fusion of two gametes

Isogamous (Spirogyra), Anisogamous (Chlamydomonas) or Oogamous (Volvox).

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Algae are divided into three main classes;

Chlorophyceae  (Green Algae)

Phaeophyceae  (Brown Algae)

Rhodophyceae  (Red Algae)

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II.Non-Vascular plants (Bryophytes)

Homosporous

Gametophyte- Dominant phase

Sporophytic phase- Lengthy

Sporogonium formation takes place

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II.Non-Vascular plants (Bryophytes) 

They also known as Atracheates which means no trachea Rhizoids- absorbing and anchoring organs