8º ANO - UNIDADE 7 – REPRODUÇÃO SEXUAL / ATIVIDADE 1 (pág. 198 a 213)
Nome do aluno: _____________________________________________________Data: _____/_____/2016
Reflita:
- Todos os seres vivos se reproduzem?
- Qual é a importância da reprodução para uma espécie?
- Todos os seres vivos se reproduzem da mesma forma?
- As pessoas de uma mesma família são semelhantes. Por quê?
1) O que são gônadas? Diferencie gônada masculina e feminina.
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2) O que são gametas? Quais são os gametas masculinos e femininos?
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3) O que é a próstata e qual a sua função?
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4) O Sistema Genital Masculino é composto por quais estruturas?
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5) Os espermatozoides são formados por duas partes: cabeça e cauda. Qual a função dessas estruturas?
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6) O Sistema Genital Feminino é composto por quais estruturas?
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7) A quantidade de gametas produzidos pelo homem é a mesma do que a mulher? Explique.
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8) O que é a menstruação e por que ela acontece?
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9) O que são métodos contraceptivos e qual a importância deles?
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10) O que são DSTs? Cite pelo menos 3 exemplos.
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11) Todos os métodos contraceptivos também protegem contra as DSTs? Cite quais possuem esta função.
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12) Como acontece a fecundação? Explique.
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13) Para que a fecundação ocorra, basta haver relação sexual entre um homem e uma mulher. Esta afirmação está
correta? Por quê?
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14) Diferencie óvulo, zigoto e embrião.
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15) O que é a placenta e a bolsa amniótica? Qual é a função delas?
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16) A gestação, na espécie humana, é de quanto tempo?
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17) Pesquise como são formados os gêmeos idênticos, gêmeos fraternos e trigêmeos. Descreva.
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