NECO Biology Past Questions & Answers - Page 57

281.

An animal with the dental formula I 0/3 : C 0/1 : P 3/3 : M 3/3 is most likely adapted for ___________ nutrition.

A.

carnivorous

B.

herbivorous

C.

holophytic

D.

ominivorous

E.

parasitic

Correct answer is B

No explanation has been provided for this answer.

282.

The release of sperms through the urethral opening into the vagina is called?

A.

copulation

B.

ejaculation

C.

fertilization

D.

spermatogenesis

E.

urination

Correct answer is B

After semen is released into the vagina, sperm immediately separates from the remaining ejaculate and sperms begin moving into the cervix and up into the uterus for fertilization in the fallopian tubes. Sperm moves into the tubes within minutes after ejaculation in the vagina.

283.

Which of these statements is NOT an idea contained in Lamarck’s theory of evolution?

A.

acquired characters are inheritable

B.

changes in the environment result in corresponding changes in the species

C.

environmental changes cause the organism to acquire new structures as an adjustment to a new prevailing environment

D.

organisms develop specialized characteristic by use and disuse of organs

E.

organisms tend to an increase in number at an exponential rate

Correct answer is E

Lamarckism, also known as Lamarckian inheritance or neo-Lamarckism, is the notion that an organism can pass on to its offspring physical characteristics that the parent organism acquired through use or disuse during its lifetime. It is also called the inheritance of acquired characteristics.

284.

Lianas is to a tropical rain forest as an extensive root system is to a/an ---------------- habitat

A.

afroalpine

B.

estuarine

C.

freshwater

D.

grassland

E.

marine

Correct answer is D

No explanation has been provided for this answer.

285.

Which material is NOT necessary for the manufacture of plant food?

A.

carbon (iv) oxide

B.

chlorophyll

C.

oxygen

D.

sunlight

E.

water

Correct answer is C

No explanation has been provided for this answer.