Sains Bab 1 Tingkatan 2 Flashcards

1
Q

Apakah itu biodiversiti?

A

Kepelbagaian organisma(mikroorganisma,haiwan dan tumbuhan)

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2
Q

Mengapakah biodiversiti wujud?

A

Habitat dan cuaca di bumi

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3
Q

Nyatakan kepentingan2 biodiversiti
(Thereโ€™s 6)

A

-sumber makanan
-perubatan
-tempat rekreasi
-ekosistem yg seimbang
-bahan mentah industri
-pengetahuan tentang jenis hidupan berkembang

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4
Q

Senaraikan kesan aktiviti2 manusia kepada alam sekitar

A

Pencemaran alam sekitar,kemusnahan habitat semula jadi, haiwan dan tumbuhan terancam kepupusan

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5
Q

Apakah kaedah2 utk memelihara dan memulihara biodiversiti?

A

Pusat perlindungan, kawasan pelindungan, mengawal pencemaran, menyediakan pendidikan, mengawal aktiviti penyahutanan, menguatkuasa undang2

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6
Q

Apakah itu pengelasan haiwan?

A

Proses pengumpulan organisma hidup ke dalam kumpulan tertentu mengikut ciri2 sepunya

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7
Q

Cara mengelaskan haiwan??

A

Invertebrata, vertebrata

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8
Q

Jenis2 haiwan vertebrata..(ada 5)

<MRABI>
</MRABI>

A

Mamalia, Reptilia, Amfibia, Burung, Ikan

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9
Q

Ciri2 Mamalia

A

Homoiterma, melahirkan anak, menyusukan anak, berbulu, bernafas melalui peparu, persenyawaan dalam

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10
Q

Ciri2 Reptilia

A

Poikiloterma, kulit keras dan bersisik, bertelur(cangkerang), nafas dari peparu, persenyawaan dalam

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11
Q

Ciri2 Ikan๐Ÿ ๐Ÿ 

A

Poikiloterma, sisik keras yg berlendir, insang, persenyawaan luar, bertelur tapi nda bercangkerang, ada sirip(fins) dan ekor

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12
Q

Ciri2 Burung

A

Homoiterma, bulu pelepah, peparu, persenyawaan dalam, telur bercangkerang keras, paru(beak) dan sayap

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13
Q

Ciri2 Amfibia

A

Poikiloterma, kulit lembap, nafas dari insang(masa kecil) peparu masa besar, persenyawaan luar, telur berlendir(no cangkerang), hidup di darat dan air

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14
Q

Cara megelaskan tumbuhan

A

Tumbuhan berbunga, tumbuhan tidak berbunga

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15
Q

Tumbuhan berbunga blh dikelaskan kepada..

A

Dikotiledon, Monokotiledon

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16
Q

Tumbuhan tidak berbunga adalah :

A

Lumut, paku pakis, konifer